I will always have an affinity for hitters with a knack for vertical bat variability. To effectively cover pitches at different heights in the strike zone, a hitter has to vary the angle of their bat relative to the ground to create lift. To hit a pitch at the top of the zone for a line drive, the bat should be flatter, and to lift a pitch at the bottom of the zone for a line drive, the bat should be steeper. It’s a simple concept that some hitters can execute with more consistency than others. Jackson Merrill is one of those guys.

When I first really started getting into the mechanics of hitting, Mike Trout was the dude who made it easy to understand vertical bat variability. Vintage Trout’s lower half looked almost identical across all swings, but depending on the height of the pitch, his entire torso angle would adjust. Through the years, players like Michael Brantley, Freddie Freeman, and Trea Turner have all executed impressive levels of vertical bat variability, too. And unsurprisingly, they all maintained (or still do) strikeout rates well below the league average with great gap-to-gap line drive skills. When Eric Longenhagen first compared Merrill’s swing to that of Brantley, I became very impatient anticipating what the Padres outfielder would do in the big leagues. So far, he’s exceeded expectations.

Through his first 121 career games, Merrill has hit for a 125 wRC+ with a .290/.321/.484 slash line. Over the past month, he’s found his power stroke to go along with his superb line drive swing, and during that span, he’s been one of the best hitters in baseball, with a 182 wRC+ across 104 plate appearances. It’s come at a good time for the Padres, who have picked it up and are only three games behind the NL West-leading Dodgers.

Merrill’s sound mechanics and production at the plate are all the more impressive considering that he is still just a 21-year-old rookie who is also learning a new position. Although his outfield experience in the minors was limited to 45 innings in left field last year at Double-A, he’s already turned into one of the top defensive center fielders in the game (6 OAA).

His ability to go down and get it with the best of them while still covering the top of the strike zone is the key to his success so early in his career. Below is a table highlighting his performances in both the upper and lower thirds of the zone:

Elite hitters have all different shapes of production. Juan Soto mashes everything at the top of the zone, Aaron Judge crushes everything in the heart, and Yordan Alvarez demolishes everything down low. But it’s uncommon for hitters to be this productive on both high and low pitches. In fact, among the 194 hitters who’ve seen 1,250 pitches this season, only two other players have xwOBAs that rank in the top 30 on pitches in both the upper and lower thirds of the zone, Ketel Marte and Marcell Ozuna, who are two of the best 11 hitters in the game by wRC+. Merrill and Ozuna are the only two hitters with top-30 xwOBAs in all three vertical thirds.

As I said before, a hitter needs to employ a flatter swing path at the top of the zone and a steeper one at the bottom. Sounds easy enough, but the tricky part is generating enough bat speed across a range of bat angles to make it work from a damage perspective while maintaining the body control to make contact. What’s notable here is how Merrill does this: Unlike most hitters, Merrill keeps his bat vertically oriented against low and high pitches, which allows him create enough lift to shoot the gaps no matter the height of the pitch. It’s a balance of strength and finesse that Merrill seems to have mastered.

I could throw a bunch of numbers at you to explain this particular skill, but the best way to understand this is by watching what he does with his body and bat. Let’s take a look:

Upper Third

Before watching the lower third swings, here are a few quick notes. He maintains his posture and shoulder plane during all three of these swings. Because of that, he keeps his bat on the same vertical plane as these pitches so he can square up the bottom part of the baseball to create backspin but not get so far under it that he pops them up. Also, his torso backbend on the second swing is fantastic. This move is most noticeable from a hitter like Shohei Ohtani, who right before contact bends his upper body backward to give his barrel space to get behind the ball. Few hitters have the necessary upper body or t-spine flexibility to do this; Merrill is one of them. Okay, now onto some swings in the lower third:

Lower Third

Pay attention to his back shoulder on each of these swings. Merrill’s body and bat are moving together as he swings, and he uses his back shoulder as a guide to get his barrel on plane with pitches in the lower third. Whether it’s a back-foot breaking ball or a dotted heater away, his back shoulder angle lines up his swing.

The important thing to take away from all of this is Merrill has a great understanding of how to use his upper body to get his bat on plane with pitches at different heights. That’s the elite skill carrying his game right now. He has the talent to develop additional tools and sharpen the ones he currently owns as he gains more experience. He’s already started tapping into his power more over the last month or so. He still chases too many pitches and struggles against lefties, albeit in a small sample of plate appearances (70 wRC+, 127 PA), but again, he is 21 and figuring things out in his first big league season. What we’re seeing from him right now is essentially his starting point as a hitter, and that’s really exciting.

Eleven seasons after making his big league debut, David Peralta might best be described as a professional hitter. As clichéd (and definitionally daft) as that label is, it’s pretty much what the 37-year-old San Diego Padres outfielder is at this stage of his career. A reliable left-handed bat now with his fourth team — the bulk of his time has come with the Arizona Diamondbacks — Peralta is slashing .268/.327/.439 with six home runs and a 118 wRC+ in the current campaign. His career numbers are actually somewhat similar. Over 1,200 games and 4,492 plate appearances, the Valencia, Venezuela native has a .279/.334/.449 slash line to go with 123 home runs and a 109 wRC+.

Peralta talked hitting when the Padres visited Fenway Park earlier this season.

———

David Laurila: How different a hitter are you now compared to when you reached the big leagues?

David Peralta: “I’m different now, because every year, every day, you learn something to get better, how to approach the game, how to approach pitching. That’s especially true now. When I first got called up, in 2014, you didn’t see that many guys throwing 99-100 mph. Now that’s normal. So, it’s a different approach that you have to have.”

Laurila: Have there been any notable changes over the years?

Peralta: “I’ve always been more simple and short, but I tried one time in my career to change my mechanics. It worked for a little bit and then stopped working.”

Laurila: This was when?

Peralta: “In 2022, in the offseason, I started doing something different with Michael Brantley. I started hitting the way he does. Again, it worked for a little bit, but then for some reason I came off of that and couldn’t find myself again. I ended up going back to my mechanics. You have to know what type of player you are, what type of hitter you are. I know that I’m not a home run hitter. I’m a line drive hitter, so I have to work on things that way.”

Laurila: Brantley hasn’t been a home run hitter either. What was he doing that you were trying to emulate? Read the rest of this entry »

Welcome to another edition of Five Things I Liked (Or Didn’t Like) This Week. It’s an incredible time to be a baseball fan, particularly one who isn’t tied to a single team or division. There are three tight division races, and both wild cards hold some intrigue. Some of the brightest stars of the game are playing incredibly well right now. The A’s are on a kelly-green-clad respectability streak that is both improbable and delightful. The White Sox are fun to watch for their ever-evolving pursuit of futility (more on that below). There’s no time for August doldrums when the games are this exciting. So no more talking vaguely about what a great week this was; let’s get right to it. And thanks, as always, to ESPN’s Zach Lowe for the format I’m borrowing here.

1. Barry Would Never

Perhaps the least likely story of the season, on an individual level, is Tyler Fitzgerald, who has turned into one of the great offensive forces in the game overnight. After putting up average offensive numbers as he climbed through the minors across four seasons plus the lost COVID year, he has established an everyday role on the Giants and unexpectedly caught fire this season. He’s now hitting home runs faster than I can count and getting his name in Giants history next to Barry Bonds for his power feats. (As an aside, this clip of Bonds and Greg Maddux discussing an old at-bat is amazing, and I highly recommend it.)
Read the rest of this entry »

Welcome to another edition of Five Things I Liked (Or Didn’t Like) This Week. August is always a down period for me when it comes to baseball watching. July has everything now. There’s the All-Star Game, the draft, and the trade deadline. Our trade value series comes out sandwiched in between. From late June through July 31, it’s full tilt baseball, and the first few weeks of August are a letdown by comparison. This year, the Olympics fit into that gap perfectly, and I’ve been watching whatever random event catches my eye the same way I usually flip between baseball games. But fear not: There’s plenty of baseball still going on, and I can’t stay away for long. I’m back in the saddle, and this week has a ton of great plays to choose from. And thanks, as always, to ESPN’s Zach Lowe for the format I’m borrowing here.

1. Twists and Turns in Pittsburgh
What kind of lunatic would say that August is the baseball doldrums? Oh, me? Well, ignore me, because some of the games this week have had juice. The Pirates are clinging to the periphery of the Wild Card race, while the Padres are roaring toward October with an absolutely scalding month of baseball. When the two teams faced off for their series opener in Pittsburgh this week, the Pirates were a game above .500, and after dropping that first game, they came back strong on Wednesday.

Some early offense staked the Pirates to a 6-5 lead even after starter Marco Gonzales got roughed up. Their best relievers were available. It looked like they might wriggle through. But Aroldis Chapman was a bit wild, and the Padres put two runners in scoring position with Manny Machado at the plate. No problem – Chapman just pulled out maybe the best pitch I’ve ever seen: Read the rest of this entry »

It’s been a good week for the Padres. As usual, president of baseball operations A.J. Preller was busy ahead of the trade deadline, and while this year’s additions weren’t as eye-catching as the 2022 trade for Juan Soto — what on earth possibly could be? — Preller greatly improved a middling bullpen and additionally fortified a thin rotation, damn the cost of the prospects dealt along the way. Meanwhile, the Padres increased their chances of reaching the playoffs by taking a pair of games from the Dodgers in San Diego, wins that not only pulled them closer to first place than they’ve been since early May, but also clinched them the season series between the two teams, giving them the potential tiebreaker if they were to finish with the same record as Los Angeles. All of this, along with the fact that the Padres have one of the league’s easiest remaining schedules, gives them their best shot at pulling off an NL West upset since Preller took the reins late in the 2014 season.

On Tuesday, hours after the team added relievers Tanner Scott and Bryan Hoeing from the Marlins and starter Martín Pérez from the Pirates, the Padres rallied to overcome the five first-inning runs that the Dodgers hung on starter Matt Waldron. Down 5-3 entering the bottom of the ninth, Manny Machado and Jackson Merrill both homered off Blake Treinen, and after Robert Suarez buzzsawed through the Dodgers on 10 pitches in the top of the 10th, Donovan Solano’s bases-loaded single plated the winning run. On Wednesday, the Padres tagged Clayton Kershaw for seven runs (three earned) in his second start since returning from shoulder surgery; San Diego even snapped Kershaw’s major league record of 423 consecutive starts with a strikeout.

The wins gave the Padres a 9-1 record over their last 10 games; they strung together a season-high seven-game winning streak against the Guardians, Nationals, and Orioles from July 20–27, a span that included Dylan Cease’s no-hitter on July 25. With a 13-9 record for July on the heels of a 16-11 May and 15-13 June, San Diego has now put together winning records in three straight months, something it failed to do last year. (That team couldn’t even manage back-to-back winning months.) What’s more, the Padres sent the Dodgers to their first losing month (11-13) since April 2018 and trimmed the division lead to 4.5 games, the smallest it’s been since May 4, which coincidentally was the day they traded for Luis Arraez. Read the rest of this entry »

The Phillies and Orioles consummated their second trade of the deadline period yesterday, as hard-throwing 29-year-old lefty Gregory Soto was sent to Baltimore in exchange for pitching prospects Seth Johnson and Moisés Chace. Soto has been having a pretty typical season, with a 4.08 ERA across 35.1 innings (43 appearances). He’s still throwing hard, and he’s accumulated a ton of walks and strikeouts having leaned more heavily on his incredible slider than in prior seasons. After a career-best year at avoiding free passes in 2023, Soto’s walk rate has ticked back up closer to his career norm of 12%; his fastball is also generating fewer swings and misses than ever before at a paltry 4.9% swinging strike rate, which is really low for a 98 mph heater.

Soto had mostly been squeezed out of high-leverage situations in Philly in deference to Matt Strahm and Jeff Hoffman, and was likely to see his opportunities further reduced by the recent acquisition of Carlos Estévez. While there’s nothing wrong with having a lefty who sits 98 as one of your lower-leverage guys, the way the market shaped up for multi-year relievers perhaps made it tempting for the Phillies to get more back in trade than is typical for a pitcher who is near the bottom of a bullpen depth chart. This one-for-two deal helps to build back a little of their farm system after the Estévez and Austin Hays trades.

In Baltimore, Soto joins Keegan Akin and Cionel Pérez as the lefties in the Orioles bullpen. He is under team control through next season. Any time an org like the Orioles acquires a pitcher whose results feel as though they’ve been far worse than his talent, you wonder if there’s something they might change about him that could help him be great. But Soto’s previous orgs, the Tigers and Phillies, have had recent success at improving pitchers, including late-bloomers like Hoffman. Perhaps there’s no low-hanging developmental fruit for the Orioles to reap here; Soto is 29 and might just be a semi-frustrating player who performs below what is typical for someone with his arm strength, let alone a lefty. That’s still constitutes a middle-inning upgrade for Baltimore. Will one of these teams be cursing themselves in a few months for having made the other more complete?

The Phillies got back two pitchers, one could help them as soon as next year, with the other being more of a developmental piece. Johnson, who is about to turn 26, had posted a 2.63 ERA (with a FIP and xFIP in the 4.13-4.26 range) as a starter at Double-A Bowie prior to the trade. The pandemic and an unfortunately timed Tommy John have prevented Johnson from posting a starter’s load of innings for consecutive seasons, and his 65 innings pitched as of the trade is already the most he’s thrown in a single season since 2021. Johnson sits 94-96 with riding life. An upper-80s cutter is his secondary weapon of choice, and he also has a mid-70s curveball with huge depth. There isn’t a platoon-neutralizing weapon here and the 2025 season will be Johnson’s last option year (unless the Phillies are given an extra option year because of his 2022 TJ), which together will probably squeeze Johnson into a bullpen role sometime next year.

Chace (pronounced CHA-say) is a medium-framed 21-year-old righty in his fourth pro season who has struck out more than a batter per inning each year of his career. Working in a piggyback role at Aberdeen prior to the trade, Chase has a good chance to develop a starter-quality pitch mix but probably not starter-quality command. He sits 93-96 with plus-plus vertical ride, he has a plus, 81-85 mph sweeper-style slider, and his changeup flashes bat-missing tail. Chace’s slider feel is advanced but that isn’t true of his other offerings. He’s Rule 5 eligible after this season and he’s going to be one of the more fascinating cases for protection. There are pretty clearly two viable big league pitches here right now, but Chace is quite far from the majors. Right now, I’d call him an unlikely add and bet that he doesn’t get Rule 5’d.

…

The Boston Red Sox added 12-year veteran big league reliever Luis García to the back of their bullpen, which to this point was in the bottom third of the league in combined reliever ERA and strikeout rate. Headed to Anaheim are four prospects, three of whom are relatively close to the big leagues. Former shortstop and current 23-year-old left fielder Matthew Lugo, 25-year-old first baseman Niko Kavadas, and 26-year-old reliever Ryan Zeferjahn were all at Triple-A Worcester, while 19-year-old pitcher Yeferson Vargas was promoted to Low-A just before the deal.

García has been one of the 50 most productive relievers in baseball since the 2021 season. He’s top 60 in WAR, FIP, ERA, strikeouts, and WHIP among relievers who’ve thrown at least 150 innings during that time, essentially a viable second-best reliever on a good team even as he climbed into his late-30s. García has a 1.17 WHIP this season even as his fastball velocity has declined two ticks from peak and a little more than one tick compared from last season. His sinker, splitter, and slider (especially the two secondaries, which are plus or better offerings generating huge swing-and-miss against big leaguers) remain good enough for García to play a relatively high-leverage role on a contender.

García hits free agency again this winter. It might feel like giving up four players is a lot for two months of a reliever, but if any team had a 40-man crunch this offseason it was going to be the Red Sox because of how many potentially serviceable position players they had in their system. Several of those players are now gone, including Kavadas, Lugo, Zeferjahn, Eddinson Paulino, and Nick Yorke. It’s good to have depth in the event of injury, but it’s plausible the Red Sox would either have lost a couple of these guys in the Rule 5 draft this offseason or clogged their roster trying to keep them.

Kavadas is striking out a third of the time at Triple-A, but he has enormous power and had a .975 OPS at the time of the trade. He’s posted a 57% hard-hit rate in Worcester and his swing is geared for lift in the extreme, with 20 degrees of launch on average. There will probably be a narrow window in Kavadas’ prime when he can get to enough power to be a relevant big league first baseman. A career trajectory similar to what Jared Walsh had with the Angels is feasible, where he enjoys one or two peak years of big power but over time is hindered by strikeouts in a way that is a problem for the overall profile of a 1B/DH athlete. Think Mike Ford.

A swing change and a more patient approach have unlocked an extra gear of power for Lugo and may have salvaged the former second round pick’s career, especially as he’s slid all the way down the defensive spectrum from shortstop to left field. His mistake-crushing style has him on pace to hit 30 homers in the minors this year. Hellbent on pulling the baseball, Lugo struggles to cover the outer third of the zone and swings inside a ton of pitches out there. Given his hit tool limitations and the way his defensive versatility has trended down, he looks more like an above-replacement up/down outfielder than a consistent role player.

Zeferjahn is a hard-throwing reliever who has averaged 96-98 with his fastball this year. He was utterly dominant at Double-A early in the season and was promoted to Worcester, where his command has returned to problematic career norms; he’s walking six batters per nine there. Zeferjahn’s fastball plays down because of poor movement and his lack of command, but he essentially has three average pitches and would be an up/down reliever in most orgs. He might play a more significant role for the Angels in the next couple of years. I expect he’ll be added to their 40-man roster this offseason.

Finally, Vargas is a stout, six foot righty who has cut his walks substantially compared to 2023 while also enjoying a two- or three-tick velocity spike. Vargas’ fastball averaged 92-93 last year and a scout who saw him earlier this spring had him sitting 93-95, but when I saw Vargas in June, he held 95-96 and touched 98 across three innings of work. He also has a snappy curveball in the 81-84 mph range that flashed plus on my look. At Vargas’ size, he’s perhaps more likely to be a reliever, but he’s made a ton of progress in the last year, especially in the strike-throwing department. He’s a hard-throwing developmental prospect with a good two-pitch foundation.

…

The Yankees acquired Enyel De Los Santos and Thomas Balboni Jr. from the Padres in exchange for 27-year-old Triple-A center fielder Brandon Lockridge. The 28-year-old De Los Santos was having a strange, homer-prone season in San Diego prior to the trade but has otherwise performed near his career norms. In 40.1 innings, De Los Santos has a 4.46 ERA, a 28% strikeout rate, and a career-best 7.6% walk rate. His stuff has also been consistent with career norms, but Enyel’s approach to pitching has changed. His slider usage is way up this year and his approach to locating his fastball has also shifted to the upper part of the zone. Here are De Los Santos’ fastball locations against lefties each of the last two years:

Seven of the 11 homers (in 40.1 innings!) De Los Santos has surrendered this year have been off his fastball, a pitch he’s throwing less than ever before. Especially in the Yankee Stadium bandbox, I’d expect some kind of fastball alteration to happen here, even if it’s just a return to more of an east/west style of pitching.

De Los Santos has been in the big leagues since he was 22 but because several of those have been partial seasons, he’s only just now in his arbitration years and will hit free agency after the 2026 season, at age 31. In addition to the other relief pitcher additions that crowded out De Los Santos on the roster, it’s possible the Padres’ more budget-beholden approach post-Peter Seidler made De Los Santos’ looming arb salary consequential. Perhaps the lack of leverage created by this is why the Padres had to attach a prospect to Enyel to get Lockridge. That prospect is the 24-year-old Balboni, a sidearm reliever who has had a two-tick velocity spike this season. Balboni now sits 93-96 and has a high-spin slider. He’s not a great strike-thrower, but he’s got good stuff and a pretty good shot to wear a big league uniform eventually.

Coming back to the Padres is Lockridge, a nice upper-level depth player who can really go get it in center field and who fortifies the Padres’ center field depth behind Jackson Merrill to a degree. Fernando Tatis Jr.’s injury has put pressure on the Padres’ outfield depth and forced David Peralta, who isn’t hitting, into action. Lockridge might be a better big league roster fit than Bryce Johnson, who isn’t as good a defender. Tim Locastro, Óscar Mercado, Cal Mitchell, Tirso Ornelas, and José Azocar are all in El Paso, too.

Another year, another frenetic trade deadline. This year’s bonanza was light on top talent relative to recent years, but it made up for that in volume. With tight races in both leagues and plenty of teams looking to shore up clear weaknesses, it was a seller’s market, particularly when it came to pitching. Now that the dust has settled, I’m here to hand out some judgment.

These are going to be inherently subjective, but that doesn’t mean I don’t put a little rigor into my system. I’m focusing on two things here when I look at individual teams. First, and more important: Did a team’s moves match up with its needs? This is easy to gauge, and since it’s the whole point of the deadline, it carries the most wait. Second: How’d teams do on the trades they made? I think this part is inherently more subjective – there’s no unified prospect ranking or database where we can see how traded players will do the rest of the season, and we’re working with less information than teams have. That doesn’t mean I’m not crediting teams for trades I like or docking them for moves I don’t, just that I’m weighting it slightly less than the first category. Let’s dive right in.
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In 2022, Martín Pérez was absolutely on fire. He put up a sterling four-win season, made the American League All-Star team, and established a new career-high strikeout rate. The Rangers gave him a qualifying offer to keep him in the fold, and he accepted it. All the while, I steadfastly refused to write about him, because c’mon, really, could this be real? Surely the other shoe was going to drop, right?

It largely did. Last season saw Pérez banished to the bullpen and then used sparingly as a lefty specialist in the playoffs, where he struck out two, walked three, and gave up five runs in three outings. He signed with the Pirates after the year, and his role seemed clear: soak up innings until their exciting young pitchers were ready, and potentially continue to work with those guys in a six-man rotation thereafter. The Pirates needed bulk pitching at a reasonable rate, and he gave it to them, delivering 16 starts, 83 innings, and 0.3 wins above replacement.

Now it’s time to write about Pérez, though. Why? The Pirates didn’t have a ton of space for him given the excellence they’re getting from the rest of their rotation, so they put him on the trade block, and the most natural thing in baseball happened: AJ Preller came calling. That’s right, the Pirates traded Pérez to San Diego in exchange for Ronaldys Jimenez. The Pirates are also covering some of his salary – a sentence I’ve never actually typed before, so they’ve got that going for them. Read the rest of this entry »

You didn’t really think teams were done swapping relievers after Friday and Saturday, did you? If you thought maybe they were tapped out for late relief help on Sunday and Monday, well, you thought wrong! If your bullpen doesn’t look like there are enough dudes to capture Helm’s Deep, you’re woefully short-armed.

The San Diego Padres acquired LHRP Tanner Scott and RHRP Bryan Hoeing from the Miami Marlins for LHSP Robby Snelling, RHSP Adam Mazur, 3B/2B Graham Pauley, and 3B/SS Jay Beshears

As one of baseball’s elite closers on an expiring contract, Tanner Scott was arguably the best short-term option available among relievers. His walk rate has peeked up a little to the numbers of the bad old days, but his first-strike percentage has stayed firmly in positive territory, which is an important indicator of where walk numbers will settle. Scott is likely to help the Padres in a very tight NL Wild Card race, but he’ll probably be even more important for them in the playoffs if they can get there. In San Diego, he teams up with Robert Suarez to asphyxiate opposing lineups late in the games. As far as elite closers who occasionally walk a few too many batters go, Scott is one of the less stressful of the genre, because he’s so hard to hit against with any authority, giving him a good shot at escaping jams following those free passes.

Bryan Hoeing is a sinker/slider reliever who has never quite clicked, as he’s never really been able to induce many swings-and-misses, nor has he mastered the art of inducing weak groundballs. He strikes me mostly as a depth guy who has plenty of years of club control left, and barring a breakout, he seems destined to be shuffled back and forth between San Diego and Triple-A El Paso a lot over the next few years. This trade is about Scott. Read the rest of this entry »

We’re barreling toward the trade deadline, which means it’s time for teams to decide if they’re in, out, or Tampa Bay. After picking which of those categories they fit into, the next move is obvious. In? Trade for a reliever. Out? Trade away your relievers. Tampa Bay? Make 10 moves, with more moving parts than you can possibly imagine. All of those types were on display this weekend, so let’s round up some reliever trades.

The Brewers and Rockies got the party started with a simple swap: Nick Mears to the Brewers, Bradley Blalock and Yujanyer Herrera to the Rockies. This one is basically what you’d expect from a deadline deal. The Brewers need relief help; they have nine pitchers on the IL, and while they just got Devin Williams back, they lost Bryan Hudson to injury earlier this week. It’s been an uphill battle to fill innings in Milwaukee this year. Mears slots right into the middle of the bullpen, helping to lengthen the number of innings the Brewers can cover with high octane arms. The Brewers have the fewest innings pitched by starters this year, so that depth really matters.
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