It’s officially hot start season. Now is the time when we write about players who have rocketed out of the blocks, then hope beyond hope that they don’t tumble to the track immediately after our articles get published. Today I’m looking at Jonah Heim, the Rangers’ switch-hitting catcher.

Heim has started off the 2023 season in a big way. Then again, maybe that’s not news, as Jonah Heim just has a tendency toward bigness. He’s 6-foot-4, which really should be too tall to be a catcher. Seriously, here he is (crouched!) next to Nick Madrigal just over a month ago:

I would pay good money to watch Heim pat Madrigal on the head and address him as “Scout.” Last year, the Rangers backstop accrued 2.8 WAR, which made him a top-10 catcher in baseball. It’s now May 17, and he’s already put up 1.9 WAR, ninth among all position players and second only to fellow-former-Athletic Sean Murphy among catchers. He’s slashing .313/.368/.519, up from .227/.298/.399 in 2022.

Last week, Esteban Rivera included Heim in an article about hitters who had improved after adding some movement to their swings this season. At that point, I was also interested in Heim’s breakout, but while I was watching him I got distracted by one of his very twitchy teammates. Heim’s production at the plate has improved in every single season of his career, and that trend will almost certainly continue this year. Even if his production were to fall off a cliff starting today, he’s already banked 144 plate appearances with a 144 wRC+.

When we talk about player breakouts, we look for reasons to believe that whatever changes they’ve made will stick around. We look for skills and tendencies that they haven’t demonstrated before, specifically the underlying metrics that tend to stabilize more quickly. Toward that end, I’m going to show you an extremely busy graph. Feel free to give it a quick glance and move on. Its purpose is to show you that almost nothing Heim is doing right now is completely without precedent:

Heim is at a career high or low in these metrics, but it’s worth keeping in mind that over the course of his young career, he’s already logged stretches at or near his current rate in all of them. If you’re looking for something in the numbers that says Heim is a completely new hitter, you’re likely to come up empty.

As a note, in this article I won’t spend much time separating out Heim’s approach or results from the left and right sides, because he’s only had 36 plate appearances as a righty. Almost all of the trends I’ll mention are true on both sides of the plate, but there’s just not enough going on from the right side to draw separate conclusions.

Let’s start with Heim’s approach. He’s been more aggressive at the plate, but he’s also been taking the first pitch more than ever:

If you ignore 0-0 counts, his swing rate on the pitches over the heart of the zone is four points higher than it was last year. Overall, his swing rate on pitches that Baseball Savant classifies as meatballs is up more than 10 points.

This increased aggression has lowered Heim’s contact rate just a tiny bit, so his walk rate has dropped by a tick while his strikeout rate has held steady. However, it’s worth noting that Heim’s contact rate has dropped significantly on pitches outside the zone and risen on pitches inside the zone. A couple weeks ago, I noted that Randy Arozarena was doing the exact same thing: “He’s making more contact in the zone and whiffing more when he chases. I don’t know how repeatable that is, but it’s a neat trick if you can pull it off.” The trick was not, in fact, repeatable for Arozarena. Since then his zone contact rate has crashed, and it’s now to five points beneath its 2022 level. That’s definitely something to keep an eye on for Heim, but I’ll also note that he’s seeing an elevated number of pitches on the edge of the strike zone, and that’s likely the kind of statistical noise that could be affecting these numbers.

As I’m sure you’ve surmised, if Heim’s walk and strikeout rates haven’t changed much, then his newfound success must be driven by what happens when he puts the ball in play:

Well that definitely looks much better. Although Heim has not yet touched his max exit velocity from either 2022 or 2021, he’s hitting the ball harder, and he’s also barreling it up more often. Both his wOBA and his expected wOBA are more than 100 points better than they were last year. From both sides of the plate, Heim is hitting the ball in the air more, which is good, but we’re not just talking about average launch angle. We’re also talking about launch angle tightness. Take a look at his launch angle charts:

Heim has dropped the standard deviation of his launch angle by nearly six degrees, which is a huge amount. His popup rate is down 3.6 percentage points and his groundball rate is down 7.5. See the red area on the left, where all of Heim’s hits came in 2022? In 2023, that’s pretty much the only place he’s hitting the ball. In 2022, 55% of Heim’s batted balls came off the bat between 0-45 degrees. In 2023, it’s 73%. Jonah Heim is actually building the whole plane out of the black box.

It’s not just that Heim is hitting the ball in the air. Heim was already a pull hitter, but he’s increased his pull rate to 53.3%, eighth highest in the league. If you refer back to the busy graph at the beginning, you’ll note that his pull rate really took off early last summer. However, when it came to fly balls and line drives, he pulled the ball just 20% of the time last year. This year he’s at 52%. When he does pull the ball in the air, Heim’s performance is roughly the same as it was last year (although his expected stats are improved). It’s just that he’s doing that a lot more often.

As Esteban noted in his article, Heim’s swing adjustments have helped him reach pitches lower in the zone, which would help explain why he is missing less often against breaking stuff and hitting those breaking pitches 6 mph harder than he did last year. Here’s what that looks like in a heat map. Lots more contact at the bottom of the zone, even though his swing rate down there hasn’t changed nearly as dramatically:

Here’s one thing I find really interesting. So far I’ve been grouping Heim’s air balls together, but here’s what happens when you separate out his fly balls and his line drives:

Last year, Heim’s line drives were scorched at 96.5 mph, while his fly balls were hit at 89.9 mph, right around his average EV. This year, that trend has been completely reversed.

That’s probably a good thing. First, players hit a lot more fly balls than they do line drives. Second, as long as they’re not hit softly, line drives are always valuable. Despite dropping 6 mph, Heim’s line drives have only shed 23 points of xwOBA. Fly balls are more dependent on exit velocity to make it past outfielders and over the wall, so Heim’s xwOBA on them jumped more than 200 points. For both reasons, Heim has benefitted from allocating his EV where it can have the most impact.

Between this chart and his launch angle graphs, it seems reasonable to assume that Heim’s swing is geared more toward elevation than it was in the past. Last year, when he really got hold of a ball, he was hitting it at about 18 degrees. This year, his hardest hits have come anywhere between 16 and 34. However, his soft hit rate is also the lowest it’s ever been. Maybe it’s just that he’s just adding some liners by muscling a few more pitches over the infield than he used to, pitches that he might previously have popped up or rolled over. As I said at the beginning, most of Heim’s underlying metrics show him doing things that he’s been able to do before. Being aggressive while still walking and striking out at the same rate, pulling the ball in the air with power. Only time will tell whether he can keep them going at the same time.

What’s got four thumbs and is set up for a real doozy of a pitchers’ duel in Arlington this evening? That’s right, Nathan Eovaldi and Spencer Strider. These two are second and third in baseball in pitcher WAR, and have many things in common besides: They’re both right-handed starters with big fastball velocity who are pitching well now after struggling to stay healthy at times… Okay, that’s about all they have in common.

It’s a bit early in the season for any individual game to be a must-watch, particularly an interleague matchup between two teams with basically no history apart from the Mark Teixeira trade. But if you’ve got time to kill and no strong preference about which game to scroll down to on MLB.TV, this is set to be the best pitching matchup of the night, and one of the best of the entire season so far.

Strider has become one of the most internet-popular pitchers out there for three reasons. First and most important, he’s good. Second, Strider has the vibe of a cool nerd from the early 2010s. He and a friend, inspired by their frustration with Pitchfork’s album grades, maintain a detailed Google Sheet where they rank indie rock records. Baseball Twitter is full of lapsed emo kids with too much liberal arts education for their own good (including me), and these folks love nothing so much as a ballplayer who gives the impression of having read a book once. Read the rest of this entry »

Players the caliber of Juan Soto are rarely available via trade, so when the Padres acquired him via trade last summer from the drowning Nationals, it made a huge splash on the level of dropping a Sherman tank into your neighborhood swimming hole. But rather than continue his previous level of superstardom, he struggled to meet expectations in San Diego. His .236/.388/.390 line was still enough for a solid wRC+ of 130, but relative to his normal level of excellence, it’s hard to call that line anything but a disappointment.

Soto’s start in 2023, though, pales even next to his post-trade performance last year. April 17 may be the nadir of his career in San Diego: the Padres were shut out for the second game in a row, and he put up his fifth consecutive hitless game, leaving him with a triple-slash of .164/.346/.361. For the calendar year ending on that day, he was hitting .230/.391/.435 and had compiled 3.5 WAR — good enough for mere mortals, but not entities made of sterner stuff.

Around this time, Harold Reynolds talked a bit on MLB Network about Soto’s swing and the changes he was making. While I’ve criticized Reynolds plenty for his general analysis when it crosses into the jurisdiction of analytics, I bookmarked this video at the time, as the analysis rang true to me. He believed that Soto’s tinkering would pay dividends, and whether it’s a coincidence or not, he’s looked a lot more like the Soto we love over the last month. In 23 games since then and through Sunday’s action, he hit .321/.447/.571 and amassed 1.2 WAR, the kind of MVP-level production we’ve expected to see from him in mustard and brown and largely have not. Read the rest of this entry »

Below is an analysis of the prospects in the farm system of the Detroit Tigers. Scouting reports were compiled with information provided by industry sources as well as my own observations. This is the third year we’re delineating between two anticipated relief roles, the abbreviations for which you’ll see in the “position” column below: MIRP for multi-inning relief pitchers, and SIRP for single-inning relief pitchers. The ETAs listed generally correspond to the year a player has to be added to the 40-man roster to avoid being made eligible for the Rule 5 draft. Manual adjustments are made where they seem appropriate, but I use that as a rule of thumb.

A quick overview of what FV (Future Value) means can be found here. A much deeper overview can be found here.

All of the ranked prospects below also appear on The Board, a resource the site offers featuring sortable scouting information for every organization. It has more details (and updated TrackMan data from various sources) than this article and integrates every team’s list so readers can compare prospects across farm systems. It can be found here. Read the rest of this entry »

Caleb Durbin is an underdog’s underdog in an organization that boasts big-time star power. Acquired along with Indigo Diaz by the New York Yankees from the Atlanta Braves last December in exchange for Lucas Luetge the 23-year-old infield prospect is a former 14th round draft pick out of a Division-3 school. Moreover, he’s never going to be mistaken for Aaron Judge or Giancarlo Stanton. Listed at 5-foot-6 (he claimed to be an inch taller when I talked to him earlier this week), Durbin looks like a stockier version of Jose Altuve.

He’s currently hitting not unlike the diminutive three-time batting champion. In 112 plate appearances — 97 with High-A Hudson Valley and 15 with Double-A Somerset — Durbin went into yesterday slashing .319/.446/.385. His bat-to-ball skills have been impressive. The Lake Forest, Illinois native has fanned just nine times while drawing 15 walks.

Durbin’s numbers at St. Louis’s Washington University were even more eye-opening. With the caveat that D-3 isn’t exactly the SEC, the erstwhile WashU Bear batted .386 with 42 walks and 10 strikeouts in 439 plate appearances over his three collegiate seasons. Since entering pro ball in 2021, he has 70 walks and 62 strikeouts in 631 plate appearances.

“Low strikeout rates are something I’ve always had,” said Durbin. “That’s kind of been my elite tool, if you want to call it that. I feel like that’s always going to be there, so it’s just a matter of building on my contact quality.” Read the rest of this entry »

It’s not going well for the Mets these days. Since jumping out to a 14–7 start despite a slew of injuries, particularly to their rotation, they’ve lost 13 of 17 amid a particularly soft stretch of their schedule. Now, just as Justin Verlander is settling into the rotation after recovering from a teres major strain that delayed his debut, Max Scherzer has been scratched from a start for the second time this month, which at least sheds light on his early struggles. Alas, the Mets’ problems hardly end with their co-ace.

On Tuesday, the 38-year-old Scherzer was scratched from his scheduled start against the Reds due to neck spasms; on Wednesday, he couldn’t even play catch:

Max Scherzer tried to play catch just now but it didn't last long or go well. His neck is still "in spasm," as he put it. But he feels better today than he did yesterday.

"It hasn't fully let go yet," he said.

The Mets plan to slot him in during the Nationals series.

— Tim Healey (@timbhealey) May 10, 2023

Scherzer was able to throw out to 90 feet in a flat-ground session on Thursday but won’t be able to start until Saturday at the earliest. That’s left the team’s rotation plans in apparent disarray…

Mets rotation looking dangerous ? pic.twitter.com/JBYudQGg0u

— B/R Walk-Off (@BRWalkoff) May 11, 2023

… not that a whole lot of good answers abound within a unit that ranks 12th in the NL with a 5.38 ERA, 14th with a 5.64 FIP, and dead last with -0.4 WAR. I don’t want to pile on here or overstate the obvious, but a $358 million payroll should probably buy more than that. Read the rest of this entry »

If you have any sense at all, you probably deactivated your Facebook account years ago, and thus liberated yourself from knowing intimate details about your distant relatives, schoolmates, and old co-workers. In this situation, it’s nevertheless helpful if your partner, or a close friend, remains plugged in. All the more so if they’re an inveterate gossip. Because even if you don’t want the fire hose of information, a little splash of water every now and then is refreshing.

Your second cousin once removed? Getting divorced for the third time, and getting really into NFTs about a year too late. The girl you asked (unsuccessfully) to junior prom? Just won a local Emmy for her work as a TV meteorologist. Booger from the sales department at your first job out of college? Newly ordained as a deacon at his church. Good for you, Booger.

As we go through life, we accumulate people according to time and context. A very small percentage of those stick and become lifelong friends; most drift away when circumstances change. Even people who are vitally important at one time — even roommates, romantic partners, confidants — float away sooner or later, to be replaced by some other person more suitable to the new social context. Read the rest of this entry »

Here’s something we all know about Joey Gallo: He’s got power to spare. Even before he was a big leaguer, tales of his top-of-the-charts power made the rounds among talent evaluators and fans alike. The question was never whether his power would play in the majors, it was whether the strikeouts that came with that power would drag his production down. Those discussions didn’t stop when he made the majors for good in 2017. In fact, it’s 2023 now, and most of the same positives and negatives are still up for debate.

To wit: Through Tuesday’s games, Gallo has hit .189/.326/.541, which works out to a 137 wRC+. He’s also striking out 32.6% of the time – and that would be the lowest strikeout rate of his career. In just 89 plate appearances, he already has seven home runs. By most accounts, it would appear that Gallo is Galloing as hard as ever.

Plot twist: Gallo has made a big adjustment this year, one that seems to have steered him out of the rut he fell into in recent seasons. See, Gallo had a second carrying tool offensively, beyond the power. His thump made opposing pitchers so afraid of him that he ran up massive walk totals merely by being passably selective. In 2019, the season that saw him post his best batting line, he walked 17.5% of the time. In 2021, his second-best, he walked 18% of the time. It’s not so much that he had a perfect batting eye; rather, he just started swinging less in 2019, and pitchers avoided the zone against him to such an extreme degree that he drew piles of walks. He kept it up for a few years before starting to swing more again in 2022. Read the rest of this entry »

When the Red Sox signed Orix Buffaloes star Masataka Yoshida over the winter, suffice it to say I was intrigued. In his walk year, in the second-best league in the world, he hit .336/.449/.559 with 21 home runs and 82 walks against just 42 strikeouts. In the 20 months leading up to his competitive debut in MLB, he had made two NPB All-Star teams and won a batting title, a Japan Series, an Olympic gold medal, and a WBC title. In the latter event, he went 9-for-22 with two home runs and struck out just once.

I don’t pretend to know much about what goes on in NPB, but everything I’d heard about Yoshida was exciting: Here was this ultra-high contact hitter who idolized Bryce Harper and posted basically peak Juan Soto numbers against the toughest pitching you’ll find outside MLB. Moreover, no baseball player’s name is more fun to say in an Australian accent, if you care about that sort of thing.

Whenever a star player comes over from Japan, there’s a natural excitement. North American baseball is so saturated with information that it’s a refreshing change when a fully formed top-level pro appears from another league — all the more so because every newcomer presents the opportunity to learn. American baseball pedagogy is as open-minded now as it’s ever been, but it still imposes an orthodoxy. Athletes are molded to fit an ideal; if not intentionally, then they mold themselves. Read the rest of this entry »

Below is an evaluation of the prospects in the Chicago Cubs farm system who readers should consider “imminent big leaguers,” players who might reasonably be expected to play in the majors at some point this year. This includes all prospects on the 40-man roster as well as those who have already established themselves in the upper levels of the minors but aren’t yet rostered. We tend to be more inclusive with pitchers and players at premium positions since their timelines are usually the ones accelerated by injuries and scarcity. Any Top 100 prospects, regardless of their ETA, are also included on this list. Reports, tool grades, and scouting information for all of the prospects below can also be found on The Board.

This is not a top-to-bottom evaluation of the Cubs farm system. We like to include what’s happening in minor league and extended spring training in our reports as much as possible, since scouting high concentrations of players in Arizona and Florida allows us to incorporate real-time, first-person information into the org lists. However, this approach has led to some situations where outdated analysis (or no analysis at all) was all that existed for players who had already debuted in the majors. Skimming the imminent big leaguers off the top of a farm system will allow this time-sensitive information to make its way onto the site more quickly, better preparing readers for the upcoming season, helping fantasy players as they draft, and building site literature on relevant prospects to facilitate transaction analysis in the event that trades or injuries foist these players into major league roles. There will still be a Cubs prospect list that includes Alexis Hernandez, Cade Horton, and all of the other prospects in the system who appear to be at least another season away. As such, today’s list includes no ordinal rankings. Readers are instead encouraged to focus on the players’ Future Value (FV) grades. Read the rest of this entry »