In the seventh inning of Sunday afternoon’s game in Houston, Bryce Miller left a sweeper over the inner third of the plate, and Jon Singleton didn’t miss it, hammering a towering two-run shot to right field that yielded a bat flip and gave the Astros a 4-3 lead. With that, the Mariners were stopped short of tying a major league record — a semi-obscure one, but an impressive one nonetheless: the most consecutive games with a starting pitcher allowing no more than two earned runs. The Mariners did rally to win 5-4, sending them to their sixth straight series victory and lifting their record to 19-15, enough to help them preserve their half-game lead over the Rangers (19-16) in the AL West.

The starters’ streak began back on April 10, when Logan Gilbert held the Blue Jays to one run in 7.2 innings, and extended to 21 games through Saturday. Most of the starts were exceptional, and for the stretch, the unit pitched to a 1.38 ERA and a 2.91 FIP, but two of those starts depended upon the earned/unearned run distinction to extend the streak, and two were short outings of four or fewer innings; one of those starts, Emerson Hancock’s clunker last Wednesday against the Braves, was both. Still, even including unearned runs, their 1.86 runs allowed per nine allowed during the streak is impressive. Read the rest of this entry »

In the modern game, pinch-hitting is seen as something of a lost art. This likely started with teams prioritizing roster spots for extra bullpen arms over spare position players. With that came a heavier emphasis on positional flexibility off the bench, rather than plus contact skills (think Ross Gload) or a big bopping bat (à la Matt Stairs). As an angry Facebook commenter might tell you, it’s one more way that sabermetrics has ruined America’s pastime. Yet, the numbers bear it out; the best arm is often a fresh arm, while conversely, fresh bats off the bench tend to perform significantly worse than their counterparts in the starting lineup. Ahead of the 2020 season, Ben Clemens found that the pinch-hitting penalty, first theorized in 2006, still held 14 years later. Contemplating Ben’s findings, Patrick Dubuque of Baseball Prospectus penned a line that stuck deep in my brain: “Pinch-hitters are just difficult to justify, except when they’re mandatory.”

Pinch-hitters were mandatory far less often in 2020 after the universal DH came into play. However, the age of the universal DH is also the age of expanded rosters and pitcher limits, and those new roster rules may just have saved the pinch-hitter from a slow demise. Pinch-hitters are rarely mandatory anymore, but they haven’t disappeared as much as you might think. Read the rest of this entry »

On April 28, the Mets walked off the Cardinals in the 11th inning. It was a huge moment, made even bigger because the embattled Mark Vientos delivered the knockout blow in just his second big league game after starting the season in the minors. That night, John DeMarsico, director of SNY’s Mets broadcasts, posted a video of the play that was shot from inside the production truck. It’s something he does occasionally, though this video had a twist: the audio from the triumphant final scene of Moneyball was overlaid on the broadcast.

Walk-Off: A behind-the-scenes featurette #Baseballiscinema pic.twitter.com/ZrgRleH9SB

— John DeMarsico (@JohnDeMarsico) April 29, 2024

DeMarsico is renowned for adding cinematic flourishes to SNY’s broadcasts, but when I watched this particular video — hearing dramatic music play as the voices in the truck worked together to decide what shot should come next — I was struck by the way DeMarsico is entrusted with telling the story of the game. SNY’s team is universally acknowledged to be one of the best in the business. At any given moment, DeMarsico can choose multiple shots that would look great and tell the viewer what is going on, but his job is bigger than that. His job is to use those images to craft a narrative. Read the rest of this entry »

Kyle Harrison was pitching for the Double-A Richmond Flying Squirrels when he was first featured here at FanGraphs in August 2022. Then a fast-rising prospect in the San Francisco Giants system, the now-22-year-old southpaw had broken down the early evolution of his arsenal for me prior to a game at Portland, Maine’s Hadlock Field. Fast forward to this past week, and we were reacquainting at a far-more-fabled venue. Harrison was preparing to take the mound at Fenway Park for his 14th big-league start, his seventh this season.

As I’m wont to do in such scenarios, I asked the dark-horse rookie-of-the-year candidate what’s changed since our 20-months-ago conversation. Not surprisingly, he’s continued to evolve.

“I’ve added a cutter, although I haven’t thrown it as much as I’d like to,” Harrison told me. “Other than that, it’s the same pitches. The slider has been feeling great, and the changeup is something that’s really come along for me; it’s a pitch I’ve been relying on a lot. I really hadn’t thrown it that much in the minors — it felt like I didn’t really have the control for it — but then all of a sudden it clicked. Now I’ve got three weapons, plus the cutter.”

Including his Thursday effort in Boston, Harrison has thrown his new cutter — Baseball Savant categorizes it as a slider — just six times all season. Which brings us to his other breaking ball. When we’d talked in Portland, the lefty called the pitch a sweepy slider. Savant categorizes it as a slurve.

What is it? Read the rest of this entry »

First base defense is complicated. It isn’t one of the most difficult positions, but that doesn’t mean it doesn’t have its own challenges. Players in the latter half of their careers who have lost athleticism sometimes adopt the position as their new home, which is interesting because it is much more difficult to learn a new position when you’re past your athletic prime. But because first base doesn’t require top tier athleticism, it’s not uncommon for that to happen. Bryce Harper’s case is a perfect example of this.

Between Philadelphia’s crowded outfield and its interest in keeping its star healthy as he ages through his 30s, first base became a viable option for the former MVP when the position opened up and he was returning from Tommy John surgery in record time. Last year, he handled it well — even if he at times ventured too far off the bag for grounders in the hole, as if he were back in right field trying to cut the ball off in the gap — given that he was learning the position on the fly.

It was a bet on Harper’s baseball skills and IQ that seems to have worked out well. His defensive metrics looked solid in 2023 (+3 OAA); of course, considering the small sample, we shouldn’t take these numbers as bond, but they were encouraging nonetheless. Now, with a full offseason of learning the position and a month’s worth of plays, we have a better idea of what his true talent is at the position. Later in this article, we’ll watch some video of Harper playing first to evaluate where he stands. But first, let’s take a look at the numbers.

So far in his first base career, Harper has a +6 OAA and a Success Rate Added between three and four percent. His OAA this season is +3, which is the highest among first basemen. Basically, the numbers indicated that Harper had a solid foundation already, and with more experience, he’s become one of the top defenders at his position.

For the rest of this piece, we’ll use video to break down Harper’s handling of three fundamental facets of the position: his footwork on groundballs that he takes unassisted, his feeds and feel for flipping to pitchers, and his opportunities to make outs at second. There are other aspects that go into first base defense — such as catching pickoff attempts, securing scoops, and receiving cutoffs before delivering relays — but I’m most interested in his skills fielding groundballs. With that said, let’s start by looking at grounders hit close enough to the bag for Harper to make an unassisted putout:

Unassisted Groundballs

Two things stick out to me right away: Harper is good at working from the ground up, and he almost always keeps his body moving in the right direction. Any shortstop would tell you that progressively moving your feet and body weight toward your target as you field the ball is crucial. The same premise holds for first baseman.

With a slow chopper, you have to stagger your feet to make sure you stay under control and don’t overplay the baseball and get a bad hop. When working toward the first base line, as Harper has done so well, you balance how hard the ball was hit with the angle you take to it; on harder hit balls, you put your body on the line to protect against a double, whereas when a deep chopper comes, you reorient your center of mass toward the bag to make sure you’re ready for a race with the runner or to throw to the pitcher. Harper looks very comfortable making these decisions. I snuck the liner from Matt Olson in there to show how quick he can be on his feet. Not every first baseman can move like that. Now, let’s move on to a more complicated task: flipping to the pitcher.

Flips to Pitcher

Harper has done well sticking to the fundamentals here. He has a rhythm established with Zack Wheeler in particular, but his execution of leading each pitcher to the bag is on point. He maintains composure throughout each of the throws, even when the batter-runner is a speedster like Elly De La Cruz. Urgency and pace are important aspects of fielding grounders at first because you can get caught in a foot race with a runner. But if you’re consistent with your delivery and have a good feel for speeding up your arm when necessary, there is no need to rush your feet.

I’m impressed by Harper’s ability to make plays moving to his right. He uses his right foot to plant or pivot very well. That has a lot to do with his athleticism. He gets into good positions to stay under the baseball and make reads with his hands. The next clips highlight that even more:

Potential Plays to Second

There are three different moves that you can make as a right-handed thrower when deciding to deliver a fire to second from the various first base positions (shallow, medium, deep) — you can pivot toward your throwing shoulder to square your body to the bag, you can spin toward your forehand and non-throwing shoulder to square your body, or you can make the throw on the run. Harper clearly has a feel those three moves.

On the grounder hit by Olson, Harper’s footwork is fantastic as he spins, turns, and throws, and his delivery is to the correct side of second base. Then on a similar grounder (the third play), he realizes he doesn’t have a throwing lane and decides to take the sure out at first. On the hard groundball from Mike Trout, Harper switches his feet very quickly (like a catcher would) and delivers the ball right on top of the bag. The only hiccup comes in the final play in the clip, when he gets the groundball near the outfield and decides to hold it instead of making a spinning throw to second. If he fires to second instead, the Phillies have had a shot at an inning-ending double play. This is something to keep your eyes on as Harper continues to develop at the position. It’s the longest throw a first baseman will make and requires a quick decision. He’s clearly comfortable making the spinning throw from a shallow depth, but this last piece will help him become more complete at the position.

In general, I’m impressed with how comfortable the Phillies slugger looks at his new position. His fundamentals are on point. He can pop off the bag quickly after holding a runner on and get his feet in check to move in any direction. Even when he makes a mistake, it’s not because he isn’t prepared with his feet. This might not be a Mookie Betts-level position switch, but it’s still worth appreciating.

It’s a great time to be a fan of the Baltimore Orioles. This is now the third season since their emergence from the dark basement of the AL East, and they no longer retain their tatterdemalion appearance. The O’s, at 20-11, have been winning by the very straightforward method of beating their opponents into submission, not by collecting more than their fair share of extra-inning and one-run victories. While the pitching staff has been a big part of the team’s success, what has made the Orioles so dangerous is a lineup that leads the American League in runs scored and wRC+. Even better for an O’s fan, they’re terrorizing opposing pitchers with a lineup that’s largely made of players that came up with the franchise and are several years away from hitting free agency. And there’s more on the way, giving the team a rather novel first world problem: having too many hitters and not enough lineup spots.

That the O’s have some of the best young offensive talent in the majors should not be lost on anyone who is into baseball. Adley Rutschman was the runner-up for AL Rookie of the Year in 2022, Gunnar Henderson took the award last year, and Jackson Holliday was the heavy favorite before his poor debut. Holliday could very easily come back and win it in the end, but if he doesn’t, one of the current favorites is yet another young Baltimore left-handed hitter, Colton Cowser. Through Thursday’s games, Cowser stands with the top WAR among AL rookies, with a .277/.351/.578, 164 wRC+ line. I haven’t even mentioned Jordan Westburg, who has an .890 OPS while splitting time between second and third base.

Even with Holliday falling flat in his first 10 games in the majors – something I expect him to rectify in the not-too-distant future – the O’s are leading the league in WAR from players younger than the traditional peak age of 27.

In franchise history, including its first year as the Milwaukee Brewers in 1901 and through decades as the St. Louis Browns, the 2023 team ranked seventh in WAR (12.2) from position players younger than 27, and this year’s team is already within shouting distance of halfway to that mark. So naturally, my question is how this team is likely to end up by the end of the season, and whether it would stack up to the best young offensive teams ever. For this, I’ll use our Depth Charts playing time to give plausible estimates of how the O’s will use their lineup for the rest of the season.

Even with Depth Charts projecting a much more conservative promotion schedule for Holliday than expected at the start of the season, the O’s have a mean projection of 21.7 WAR from this group of players. That would be the best in team history, edging out the 1973 club with Bobby Grich, Don Baylor, Earl Williams, and Al Bumbry as the headliners. And yes, it’s significant on a historical level as well.

Their 21.7 WAR would be enough to put the Orioles in the top 25, and there’s an argument that this undersells the group. The vast majority of the teams with the most 26-and-under contributions come from the pre-World War II era, when players were called up at younger ages and there was no ticking service time clock. Looking at just the divisional era – which now covers more than half a century – the Orioles rank impressively among recent stables of young talent.

There are some mighty impressive teams on that list, most notably the Big Red Machine and the early 1970s Athletics before free agency.

And even this perhaps underrates Baltimore’s offensive talent. It wouldn’t be surprising to see Holliday destroy in the minors and get a quick call back up, and if he does, he would slide right into the everyday lineup. Otherwise, though, the Orioles are now up to the practical limitation of roster and starting lineup spots. Cowser is an example of this: It would have been hard to get him regular playing time if not for Austin Hays’ dreadful start to the season. (Hayes is now on the IL). Heston Kjerstad was called up to replace Hays on April 23, after hitting .349/.431/.744 at Triple-A Norfolk, yet the former first rounder has gotten only eight plate appearances total in three games — the O’s have played 10 games with him on the roster.

Kjerstad is far from the only Orioles farmhand who likely would have gotten more playing time on a team with a thinner roster. At Triple-A, Coby Mayo is hitting .333/.397/.683 with 11 homers while mostly playing third base, a position at which the Orioles are already overflowing. Connor Norby has split time at second base and the outfield with an .829 OPS at Norfolk, but there’s no obvious place for him to get playing time unless the team decides to cut Ramón Urías. Using up-to-date minor league translations for Kjerstad, Mayo, and Norby, we can get an idea, via some up-to-date ZiPS projections, at what this trio could do if they O’s had playing time to give them.

All three players project as league average or better if they started in the majors right now.

While this represents a pretty enviable problem for the Orioles to have, it also can be an opportunity. The organization is deep in hitters, but its farm system does not have anywhere near the same depth when it comes to pitching. We don’t yet have a 2024 farm system ranking up for the Orioles, but in the updated 2023 list, the top 15 prospects featured just two pitchers, Cade Povich and Seth Johnson. Corbin Burnes was a great acquisition, but it doesn’t have to end there; as teams fall out of contention, the possibility exists for Baltimore to add a pitcher who can not only pitch down the stretch or in a possible playoff series or three, but in 2025 and beyond. The surplus of offensive talent should give the Orioles the ability to offer more for the right pitcher than practically any other team in baseball can, and if they do swing a trade, they’d still have so many other hitters in the pipeline that such a move likely wouldn’t make a dent in the team’s long-term outlook in a meaningful way.

Whether Baltimore gets to the World Series after a drought of more than 40 years is still uncertain. But this is the Orioles team that looks the most like the ones of the early Earl Weaver years: It’s a club that’s built mostly from within and overflowing with young stars. That worked out pretty well the first time around.

Release angles comprise the vertical and horizontal angles at which a pitcher releases a pitch. They are the natural counterpart to approach angles, except they capture the initial angle of a pitch’s trajectory rather than its final angle upon crossing home plate. Release angles can tell us a lot — namely, where a pitch is headed (or, at least, intended to go). However, we already have plenty of data to describe a pitch’s flight path. We have its short-form movement (i.e., total inches of break), as well as its acceleration and velocity vectors in all three dimensions, not to mention its final location coordinates. We can pretty much map the entire trajectory without release angles. Like the last unrevealed letter in Wheel of Fortune, you theoretically need it to solve the puzzle, but you can probably infer the word or phrase just fine without it. What are release angles, then, if not just a different way to describe a pitch’s movement in space? What information do release angles add? (Michael Rosen adeptly provided an answer to that question here.)

When a pitcher throws a pitch, the pitch reaches home plate in a fraction of a second. The opposing hitter, then, has a fraction of a fraction of a second to discern a great many things about the pitch: its velocity, its shape, its probable final location, all to then ascertain whether or not he should swing. Given the impossibly small window of time in which to make a swing decision, much of a hitter’s behavior is influenced by the untold thousands of pitches he’s seen before, like a mental library of pitch shapes. One of the very first visual cues a hitter receives, aside from the pitcher’s release point, is the angle at which a pitch leaves the pitcher’s hand. This particular visual cue ought to enable a hitter to determine out-of-hand a prohibitively bad pitch — one that, on most occasions, will not find the zone. He can potentially make a snap decision with a fairly high degree of confidence that the pitch will miss the zone. Read the rest of this entry »

In the course of researching the haphazard nature of JP Sears’ fastball command for my blog Pitch Plots, I realized I was missing the answer to a fundamental question: Why does the ball go where it goes?

Specifically, I had no idea which variables determine the physical location where a pitch crosses home plate. My first guesses revealed nothing: a combination of velocity, extension, spin, and release height had no relationship to a pitch’s eventual location. If it wasn’t any of these factors, what could Sears change to throw his fastball to better locations?

I was missing the key variable: the release trajectory. Trajectory, as defined here, is not just release height and width but also the vertical and horizontal release angles of the pitch, which are not widely available to the public on a pitch-by-pitch basis.

The release trajectory, it turns out, explains nearly everything about the ultimate location of a pitch. Read the rest of this entry »

One of the numerous reasons why Mike Trout’s latest injury — a torn meniscus in his left knee, requiring surgery that will sideline him for at least four weeks and perhaps longer — is such a bummer is that the three-time MVP and future Hall of Famer was off to a pretty strong start. While his .220/.325/.541 slash line is nothing to write home about within the context of his career — indeed, his 141 wRC+ would be his second-lowest mark, after last year — he had hit 10 homers before the end of April for just the second time (2018 was the other). That total was enough to share the major league lead with Gunnar Henderson, and it put him on pace to challenge his career high of 45 homers, set in 2019. Even within an offensive profile that’s undergoing some evolution as he ages, that’s impressive.

That goes doubly given that through the end of April, league-wide home run rates were down more than 15% relative to last season. Where in 2023 teams averaged 1.21 home runs per game, through the end of April they had averaged just 1.02 homers per game. Note that we’re still early enough in the season that a single day’s slate of games can bump that last decimal in one direction or another; with 20 homers in 30 team-games on May 1, the season-to-date average fell from 1.018 homers per game to 1.007. All of which is to say that while the situation deserves a closer look — particularly with league-wide scoring having decreased from last year — this should be considered a preliminary investigation.

If the home run rate from this March and April holds up — and hereafter, I’m going to lump all games before May 1 into what we consider April, just as we do in our splits — it would represent the largest year-to-year drop since 1987–88, when the per-game rate fell from 1.06 homers per game to 0.76. If you’ve been following along with home run history, you know that the 1987 season was an outlier that marked the first time home run rates rose above 1.0 per game. While rates immediately fell back below that threshold and remained there through the next half-decade, that season served as a preview of what was to come from 1994–2009, when home run rates were above that threshold every year, likely due to a confluence of factors that ranged from expansion and newer ballparks to the widespread use of performance-enhancing drugs and changes to the baseball itself. Read the rest of this entry »

Wilyer Abreu has been one of the top rookies in baseball this season. Along with playing above-average defense in right field, the 24-year-old Boston Red Sox outfielder has logged a 155 wRC+ while slashing .316/.396/.519 over 91 plate appearances. His 1.1 WAR ranks second among rookie position players, behind Baltimore’s Colton Cowser. Granted, less than a month’s worth of games is hardly enough time to know if he’ll keep this up, but Abreu’s strong start is encouraging nonetheless.

He similarly impressed last year in a 28-game cameo. Debuting in late August, Abreu went 24-for-76 (.316) with two home runs, the exact same numbers he had this April. There’s juice in his bat. Eric Longenhagen wrote last summer that Abreu “has above-average raw power,” and the youngster’s production has backed up that prose. By the time of his call-up, Abreu had gone yard 22 times, with a 135 wRC+, at Triple-A Worcester.

His path to the big leagues included more than your typical climb up the minor league ladder. The Red Sox acquired Abreu from the Houston Astros, along with Enmanuel Valdez, in the trade for Christian Vázquez on August 1, 2022 — but that’s also only part of the story. The Maracaibo, Venezuela native had intended to sign with Boston in 2016, but the Red Sox were locked out of the international amateur market in 2016-17 as punishment for violating international-signing regulations. Abreu subsequently signed with the Astros in 2017; he waited an extra year to sign because he was told he’d get a better offer if he did.

He’s evolved as a hitter since inking his first professional contract. Read the rest of this entry »