Gabriel Moreno is one of several exciting and talented young backstops in the big leagues (and these playoffs). After coming to Arizona with Lourdes Gurriel Jr. in exchange for Daulton Varsho, he got the opportunity to be the primary catcher and show off the skills he displayed in the minor leagues. He made an immediate defensive impact despite his offensive struggles in the beginning of the season; when the league was running wild in the spring, he was prepared, throwing guys out left and right. But his bat took a second to come around, likely due to ongoing discomfort in his lead shoulder. He eventually made a trip to the injured list, but when he returned, he looked as healthy as can be, posting a 141 wRC+ in the second half and playing excellent defense.

During the Diamondbacks’ improbable run and five-game postseason win streak, there is no question that Corbin Carroll has been their best player. But when you sweep a team that finished with 16 more wins in the regular season, you’re going to need more help, and Moreno has been a formidable co-star. He’s continued his hot streak to close the season into October. With more health, his row and barrel tip have gotten looser and turned his ability to make consistent hard contact into loud home runs in timely situations. He only had seven in the regular season across 380 plate appearances, but his launch angle distribution improved dramatically when he got healthy:

All this to say, it’s not shocking to see him take swings like his 419-foot home run against Clayton Kershaw in Game 1 of the NLDS — a swing that came on the tail end of an impressive at-bat. Read the rest of this entry »

One of my favorite things about observing the playoffs is seeing a team that has a plan and is unwilling to compromise on it. The first two innings of ALCS Game 1 were fast-paced, and a lot of that was due to the Rangers’ approach of attacking every pitch they got in the zone from Justin Verlander. The first eight Texas batters all swung at the first strikes they saw — every single one. After Leody Taveras walked on four pitches, Marcus Semien did the same even as he got a slider in a 2–0 count. Corey Seager continued the trend in the top of the third, but the streak ended after Mitch Garver took an 0–0 curveball in the zone.

The Rangers knew their best chance of getting to Verlander would be early. In 2023, his wOBA allowed the first time through the lineup was .315, then dropped to .266 the second time through and .267 the third time. Once he settles in with his command, he’s less prone to mistakes. That same trend played out in Game 1. Despite getting five batters on the first time through the order, the Rangers only managed to scratch one run across. And because of Texas’ aggression and putting the ball in play early in counts, Verlander’s pitch count was low; he finished the third with only 37 pitches. Read the rest of this entry »

Through the course of a season, it can be difficult to appreciate catcher defense. The expectation is that catchers will put their body on the line for their team day in and day out. But while they have their opportunities to save runs and steal strikes, no single block, frame, or throw has a significant effect on the season; at best, you’re saving a single run. If you miss a block or don’t get your hand under a low fastball in the shadow zone, you just move on and get the next one. But in a close playoff game, each of those pitches suddenly becomes more important, and along with that, the role of the catcher. These are the times when you get to see a catcher who really controls the game, just like Jonah Heim has.

Heim was one of the best catchers in baseball this year, delivering 4.1 WAR over 131 games. From a defensive perspective, he was the best in baseball regardless of position according to Defensive Runs Above Average, third-best according to Deserved Runs Prevented, and eighth-best according to Statcast’s Fielding Run Value. Visually, the argument is just as compelling. He is smooth in every aspect of the game and easily deserving of the statistical reputation he’s established for himself. He’s showing extreme poise in guiding a staff that’s missing some of its best pitchers, allowing them to take the risks they need to combat a talented Orioles’ lineup. Read the rest of this entry »

Royce Lewis returned from the injured list on Tuesday to start the Twins’ postseason run. He hadn’t played in a game since September 19 due to a hamstring strain, and it wasn’t completely clear if he would be activated for the series. It’s a decision not without risk. Rushing a player back from a hamstring strain can be suspect, and Lewis’ young career has been filled with health challenges. From a mechanical standpoint, hamstring strains can compromise how you interact with the ground and cause compensations up the kinetic chain.

Given how important every at-bat is in the playoffs, there’s very little room for error. But while Lewis still may not be able to get into a full sprint, that doesn’t matter so much if you’re trotting around the base paths. In his first two at-bats of his playoff career, he took Kevin Gausman yard for two no-doubt home runs, leading the Twins to a 3–1 victory over Toronto and their first postseason win since 2004. Read the rest of this entry »

Where is the line that tells you whether a pitcher is a starter or reliever? It’s subjective, but there are a few benchmarks that baseball folks have used over time to determine a pitcher’s role. Do they have more than two pitches? Do they have extreme splits? Does their velocity hold as their pitch count increases? Depending on the answer to any of these questions (and more), you’ll have a decent idea of a pitcher’s fate as a starter or reliever.

Sometimes, though, pitchers get moved to the bullpen simply because the other five options at any given time seem more viable, and not necessarily because they didn’t possess the skills to dish out six quality innings. The latter firmly describes Michael King.

King was a starter throughout his entire minor league career and even started a few games during his debut season in 2020 before settling into a long relief role in 2021 thanks to a crowded Yankees rotation. But the version of King we saw in the minors and those two seasons is not what he is now. For that, we have to reference his 2022 season, when he fully embraced his ability to supinate and started throwing his sweeper as his only breaking ball, upping the usage to 30%; the year prior, he only threw it 10% of the time. Before suffering a season-ending elbow fracture, he posted a 2.29 ERA and 2.23 FIP in 51 innings, delivering several multi-inning outings out of the bullpen.

On top of his sinker and sweeper, King displayed his ability to mix in his four-seamer and changeup at the right times, both of which have been crucial to his success as a starter; more on that later. That gave him a four-pitch mix where each pitch was at least average and more than one that was plus. That’s the exact kind of arsenal you’d expect a rotation arm to have, but coming off elbow surgery and bullpen success and facing another full starting five, the expectation wasn’t that he’d get the chance to pitch in that role. Read the rest of this entry »

As somebody who grew up playing baseball and continued to play through college, I’m familiar with all the old school adages that this game has. As I tried to develop my own abilities, I needed to figure out which were true, which were false, and which had some grey area. Swing down, for example, is not necessarily what hitters do in practice, and I had to relearn that. Then there is the “squish the bug” cue for your back foot. That actually makes most hitters get too spinny and reinforces an incorrect interaction with the ground. These are just a few hitting examples. But for this piece, I’m going to focus on stealing bases.

When an aggressive base stealer is on first, they command a level of mental real estate in a pitcher’s mind, though it’s important to note not every pitcher is the same. Some are more equipped to handle a runner than others. That could be due to a good pickoff move, quick time to the plate, or simply because a guy remains unfazed no matter the situation. This is all common knowledge. What isn’t, and what I’ve been pondering as one of the grey area tropes, is whether pitchers change their pitch mix when there is a threat to run. In general, I always thought this was true, but I never went back and looked at any data to confirm it. But we live in a baseball world with solid data accessibility, and luckily, this question can be answered thanks to Baseball Savant. Read the rest of this entry »

This year, trade deadline season kicked off when the Rangers acquired Aroldis Chapman from the Royals at the end of June. Texas desperately needed relief help, so it pulled an early trigger in getting Chapman a full month ahead of the deadline. In today’s game, teams moving rental relievers typically do not get anything too exciting in return. That seemed to be the case with Kansas City’s part of the deal: Cole Ragans and 17-year-old outfielder Roni Cabrera. Emphasis on seemed.

Ragans had pitched 24.1 innings in relief across 17 games with the Rangers after an extended but rough debut in 2022. Like last year, things hadn’t gone well. He walked 13.2% of the batters he faced, and hitters slugged .561 against his four-seamer. In that short span, he accumulated -5.2 run value on that pitch alone. Even with a nasty changeup and a four-tick velocity jump from ’22, he was still struggling to get the results he needed.

But after his move to Kansas City and a rough first outing, everything changed. Eno Sarris’ profile of Ragans from last week does a fantastic and thorough job at explaining his career turnaround, from his training at Tread Athletics in the offseason to create his velocity jump to consulting with them and Royals pitching coach Brian Sweeney after his first start in Triple-A Omaha to add his gyro slider. I strongly urge you read the piece, because mine is as a supporting actor to that story. Read the rest of this entry »

Since the beginning of 2021, when Francisco Lindor joined the Mets, he ranks fifth in position player WAR (16.2) behind Aaron Judge (20.4), Freddie Freeman (17.9), Mookie Betts (16.8), and José Ramírez (16.5). While others at his position have seen their production tail off for one reason or another, he has remained excellent thanks to his all-around game.

In recent seasons, though, Lindor has struggled at the plate for prolonged periods. But this year and last, he has made up for slow starts with excellent second halves. From an overall production standpoint, he is an extremely similar hitter from both sides, but since the most advantageous platoon split comes as a left-handed hitter, his bouncebacks have often been driven by adjustments on that side of the plate. That story tracks this season, too, as Lindor is on one of the best stretches of his career as a lefty. Here are the differences between his left-handed production before and after the start of July:

Lindor’s SweetSpot% from this side is top notch; that wasn’t — and never has been — an issue for him. His adjustable bat path and swing decisions propel him to launch the ball consistently at an ideal angle. Oddly enough, despite this consistency in his spread of launch angles, his performance was still down in the first few months of the year, and even despite a couple of percentage points decrease in SweetSpot%, his performance and expected outcomes on balls in play still ticked up from July on because of a rate that is still high relative to his peers. To understand why that resulted in more success recently than at the beginning of the year, we have to do some digging into those sweet spot batted balls. Read the rest of this entry »

Freddie Freeman is a fantastic baseball player. Since the beginning of 2020, he is tied with Juan Soto for fourth in wRC+, sitting at 157. He is also as durable as any other position player in the league, ranking third in games played in that same span. But wRC+ and durability aren’t why I’m here to discuss Freeman today. Instead, I’m interested in his baserunning.

Baserunning is certainly not the most important aspect of Freeman’s game, but he is darn good at it. Before I get into how and why, though, I want to talk about his lack of speed. At 26.6 ft/s on average, Freeman is a 35th-percentile runner; in the landscape of the league and other good baserunners, he is a bit of a tortoise. But that doesn’t stop him on the bases.

When it comes to baserunning, your chances are much better of being above average on the basepaths if you can boogie. If you peruse the BsR or Statcast Runner Runs leaderboards, you’ll see mostly 90th-percentile runners and above, with the bottom line being in the mid-70s. Rarely does a name like Freeman’s pop up, but he ranks 17th of 139 in BsR and 37th of 295 in Runner Runs. For him, these results come about because of other aspects of the game that you don’t need speed for: instincts, reads, and preparation. The further down you are in the speed department, the more important these skills become. This wasn’t always a positive part of Freeman’s game, but in the last few years, he has been consistently above-average. Read the rest of this entry »

Things didn’t look so hot for Triston Casas in the first few months of the season. From the beginning of the year through the end of May, he had a 95 wRC+ and a .195/.326/.376 slash line. He wasn’t doing enough damage in the heart of the zone and had a suboptimal launch angle distribution. That’s a fancy way of saying he wasn’t consistently making pitchers’ mistakes hurt because his batted balls were all over the place. His promising future as a masher had a bit of a cloud over it, but after an explosive July, there is good reason to be more confident in him.

Casas’ turnaround has multiple layers to it. Along with a slight mechanical tweak, he has taken on a more aggressive approach while focusing on contact towards the middle of the field. With a solid combination of power and natural lift, he is able to play with the big parts of Fenway Park. He isn’t utilizing the approach we’ve seen many lefty Red Sox hitters adopt over the years of peppering line drives and fly balls off the Green Monster. In fact, he’s 134th out of 143 qualified hitters in Oppo%. Instead, he sticks to where his bat path plays – the middle of the field. Well, that was his approach in July, anyway. Below is a table showing Casas’ horizontal and vertical batted ball profile by month this season:

He had a good June, but in terms of his batted ball profile, it didn’t look like his breakout July. In July, he stayed off the ground at an extreme rate while hitting half of his batted balls up the middle. There are only three qualified hitters in baseball with a groundball rate below 30% for the entire year: Jack Suwinski (26.1%), Nolan Gorman (27.8%), and Mookie Betts (28.0%). This isn’t in the table, but Casas’ July HR/FB ratio was 29.2%, which would put him behind only Shohei Ohtani if he were to sustain it over the full season. To see Casas hit at rates similar to elite guys like Betts and Ohtani is both good and bad. He doesn’t have the raw power or hit tool to live in outlier territory on a consistent basis, but that doesn’t necessarily invalidate his success. Rather, it shows us what Casas needs to do to be a consistent power hitter. If his swing tweak and new approach enable him to more consistently hit the ball in the air, we should have greater confidence in his ability to sustain success, even as his stats become less extreme.

Before looking at the mechanical tweak, I want to focus on where and when the Red Sox first baseman has been more aggressive. The data below details his swing rates on pitches in the upper and lower third of the zone:

When the calendar flipped to June, Casas got significantly more aggressive at the top and bottom of the zone. As July rolled around, he doubled down on that aggression while adding more early count swings. There is an old school mantra that the best pitch you’ll see in an at-bat is the first one. Pitchers want to get ahead and take advantage of the hitter trying to find their timing. Still, if a pitcher lays in a cookie, the hitter should attack it. It’s always a sound approach to hunt the heart of the zone, and if you’re a struggling rookie, it makes even more sense to simplify things. When Casas implemented that strategy in July, it paid off.

He had success in the first two months of the season on 0-0 pitches in the zone, with a .424 and .681 xwOBA, respectively. In June, he ran a .026 xwOBA on these pitches across 18 total swings, though the results on those swings seem like a small sample blip; 11 of them were foul balls and three were whiffs. Something was off there, but the trend didn’t continue into July. Casas flipped the script and bumped up his swing rate by over 20 percentage points while running a .476 xwOBA. If a pitcher attacked him in the zone to start the at-bat, he put on an A swing. Now that he seems to have a better feel for his swing, he’ll have to strike the right balance of patience and aggression depending on how pitchers approach him.

Let’s look at the adjustment that helped things click mechanically. Here are a few swings from May and June before Casas made the change:

And here are a few during his stellar month:

Every hitter has a different feel for how to turn their barrel over and enter the zone. Some are more handsy, like Marcus Semien, while others aren’t handsy at all, like Casas. My use of two different angles from before his tweak is intentional. One shows his hands relative to his body on a straight angle, and the other shows how far he tucked them behind his ear. There was a good bit of movement that was triggered by his hands. But after his tweak, his barrel was almost perpendicular to the ground, with his hands working according to the movement of his entire upper body load rather than on their own. This brings me to the idea of connection. Before explaining what that means, take a look at this video posted by Alex Speier from a few days ago:

Triston Casas does not step in the bucket. He steps with a bucket. pic.twitter.com/z7TFNtM3EA

— Alex Speier (@alexspeier) August 4, 2023

This is a drill that hones the feeling of early connection between your upper body and barrel. By holding the bucket between his arms and chest throughout his swing, Casas establishes where his barrel is in space relative to his arms and torso. The result is his hands being along for the ride, rather than being the driver of the swing. In other words, his barrel placement is the result of how his upper body moves in space. While the swing in this video isn’t what it looks like in game, it helps give Casas the feel he needs to have an efficiently sequenced load and plane of rotation. You’ll notice that his hands are hardly moving during this practice swing. That ties directly to what we saw him change in July. His hands aren’t tipping until his shoulders do, and he’s not letting them guide his swing path. The result is improved barrel control stemming from better feel for where his barrel is in space. The data backs that up too. July was the first month Casas had a SweetSpot% above 37% on the season, and he blew that mark away, with 49% of his batted balls hit between eight and 32 degrees.

Usually, we don’t get a look into drill work like we did here. Connection drills are very common but can look confusing to the casual viewer. Luckily for us, a logical story can be told here. There is a direct line between Casas’ batted ball data and swing tweak, and the connection drill swings. I often talk about players finding their blueprint for success. A lot of the time, a particular drill can help a hitter get back in line with that blueprint. Casas now appears to have a better idea of idea of what that looks like for him, and specific cues for how he can stay there.

All this said, it doesn’t necessarily mean Casas has figured out hitting. Like most hitters, he has holes that can be exposed. As he finds success, pitchers will adjust their mix or location. Since August began, Casas has faced a career-high rate of breaking balls. He hadn’t seen more than 34% breakers in any month, but after 73 pitches this month, that rate is up to 50.7%. It’s working too – his whiff rate on that pitch group is 41.7% and he has yet to barrel a breaking ball. It’s a cat and mouse game that he will have to continuously adjust to while trying to find stability.

How Casas progresses versus his opponents’ changing approach will be crucial to our understanding of where his floor and ceiling will ultimately settle. At the very least, though, we’ve seen what the best version of Casas might look like, even if it hasn’t lasted a full season. A 122 wRC+ in your first full season ain’t too shabby.