There’s this episode of SpongeBob Squarepants that I love, in which Mr. Krabs’ snowballing desire for jellyfish jelly causes SpongeBob to catch more and more jellyfish until none remain. I bring this up because I like to imagine front offices as Mr. Krabs: Over the past few years, they’ve been shifting against more and more hitters, with seemingly no end in sight.

It turns out, however, we might have already reached the peak of infield shifting, at least in terms of volume. Comprehensive shift data dates back to 2016. Since then, here’s the rate of shifts against left- and right-handed batters each season:

This season, we’ve reached a point of stagnation. Teams haven’t budged from the mark they set against lefty hitters in 2020. Moreover, after a steady year-to-year increase, the rate of shifts against righty hitters has actually dropped. What I find more interesting — and ultimately want to dissect — is the latter trend. That teams aren’t looking for new lefties to shift against makes sense, since there’s presumably a limited pool. But righties demonstrate pull-side tendencies, too. If we assume teams are shifting mainly based on pull rates, we’d also expect the number of shifts against righties to keep climbing.

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In the days leading up to the trade deadline, Jarred Kelenic earned himself a mention in Jay Jaffe’s corner outfield replacement-level killers, a series that analyzes the players who are dragging down contending teams. The idea is to identify positions of need for potential trades to come, but Kelenic’s struggles in the majors weren’t going to force the team to make a deal. Instead, as Jay put it, “this should probably be a sink-or-swim situation unless he’s totally overwhelmed.”

Kelenic has already been in the spotlight because of the Mariners gaming his service time; his performance since his promotion has put him back in it. He got the call on May 13, but simply didn’t hit: In his first 23 games over a total of 92 plate appearances, he slashed .096/.185/.193. He collected just eight hits total and had come up empty in his last 44 plate appearances when the Mariners optioned him back to Triple-A in early June.

After a successful stint at Tacoma — a 137 wRC+ — Kelenic was brought back to Seattle. This time around, the results have been a bit better, but they’re still ugly overall, as he’s gone from a 10 wRC+ in that first stint to a .181/.263/.315 line and 65 wRC+ since his second promotion. Through Tuesday’s action, he’s up to a 45 wRC+ and -1.1 WAR in 64 games:

Even with the improved numbers since his return from Triple-A, Kelenic is still running the 11th-lowest wRC+ among qualified hitters in that time. He’s still not hitting well. But while there may not be one answer for why he is struggling, I believe that there’s a huge plate discipline problem that isn’t entirely captured in the walk and strikeout rates alone. Read the rest of this entry »

Ben Lindbergh and Meg Rowley banter about Wander Franco coming into his own, Kevin Newman’s steep offensive falloff post-spring training, a strikeout milestone for Robbie Ray, the Kendall Graveman–Abraham Toro trade and promotions/extensions for the Mariners’ Jerry Dipoto and Scott Servais, the new-and-improved Blake Snell, Austin Adams’ historic hit-by-pitch pace, Cardinals radio broadcaster Mike Shannon discovering and attempting to explain NFTs on the air, and the difference between bad and good Mets missteps. Then (41:21) they bring on FanGraphs lead prospect analyst Eric Longenhagen to discuss September roster expansion, touching on the developmental implications of going from 40-man to 28-man rosters, the most promising prospects who could debut this month and impact pennant races or the playoffs (including Joe Ryan, Nate Pearson, Shane Baz, and Hunter Greene), the remaking of Padres pitcher MacKenzie Gore, post-deadline desperation, the Nationals’ Josiah Gray, Keibert Ruiz, and Riley Adams, the Royals’ Nicky Lopez and Bobby Witt Jr., and other notable names.

Audio intro: Frank Sinatra, "September in the Rain"
Audio interstitial: Frank Sinatra, "September Song"
Audio outro: Frazey Ford, "September Fields"

Link to Franco streak article
Link to Dan Szymborski on Franco
Link to article on Newman’s spring
Link to spring training stats study
Link to B-Ref career K/9 leaderboard
Link to article about Snell’s reinvention
Link to article about Adams
Link to article on Shannon and NFTs
Link to Zack Scott news
Link to roster expansion explainer
Link to list of September 1 callups
Link to Gore mechanics video
Link to Eric on AL impact pitchers
Link to Carmen Ciardiello on Lopez
Link to Adam’s EW Wiki post
Link to EW Wiki
Link to EW Wiki sign-up sheet
Link to EW emails database

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On Tuesday night, rookie sensation Wander Franco extended his streak of getting on-base at least once to an impressive 31 games. There’s still quite a ways to go before you make the shade of Ted Williams wonder if his 84-game (!) streak is in jeopardy, but it’s a mighty impressive feat for a 20-year-old.

That said, Franco is no ordinary rookie. As much a consensus No. 1 prospect as anyone I can ever remember, he didn’t exactly sneak up on anyone who was paying attention; his 80 Future Value grade — a first on our prospect lists — wasn’t something given out recklessly. At 18, an age at which minor league prospects are just getting started in the “real” professional leagues, he was already terrorizing the full-season Florida State League, hitting .339/.408/.464. That would be great for a first base prospect; for a young shortstop, it’s astounding.

Despite losing a key developmental season in 2020, Franco didn’t need much time to get going. Skipped right to Triple-A this year, he hit .315/.367/.586 for the Durham Bulls and was called up six weeks later. Outside of a home run in his very first game, the first week or two was an adjustment period; through 14 games, his line stood at .211/.274/.351 with 13 strikeouts in 57 at-bats against five walks. But since starting his on-base streak, he’s hit .314/.385/.504, also with 13 strikeouts but in 121 ABs.

Every streak has some element of good fortune, but in Franco’s running plate discipline numbers, you can almost see him adjusting to pitchers. And those numbers tend to be “stickier” than most other offensive numbers; short-term changes in results are more likely to be real compared to, say, batting average.

After his first two weeks in the majors, Franco’s contact rate increased despite him simultaneously swinging at more pitches. As pitchers in recent weeks have started throwing fewer strikes against him, that swing rate has responded accordingly, but his rate of contact has continued to rise. His performance during the streak isn’t exactly a galaxy away from his ZiPS minor league translation of .291/.335/.503 at Durham; combine that with the real improvements in plate discipline, and you can make a good argument that we’re seeing the bonafide Wander Franco in these waning days of summer.

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Which players have helped their Hall of Fame cases the most this year? The question comes up in almost every chat of mine, and sometimes in radio spots as well. You’d think I’d be used to this by now, but I rarely have more than an answer or two at the ready unless one of those players has recently been in the headlines for reaching a milestone. But with the end of the 2021 season in sight, and with the COVID-delayed Class of 2020 Hall of Fame Induction Day ceremony just a week away, it’s worth digging deeper for answers.

For this exercise, I’m focused mainly on mid- or late-career players rather than early-career ones. Yes, the five-win seasons of Vladimir Guerrero Jr., Juan Soto, and Fernando Tatis Jr. are solid steps towards attaining the ceilings we envision — and likewise for Shohei Ohtani given his singularly remarkable two-way season — but all of those players are at least half a decade away from the point when we can start to get real about their chances. JAWS and seven-year peak WAR gains are the major drivers of my selections in this piece and a companion one for pitchers, but positional standards, traditional milestones, and ordinal rankings are considerations as well. With one exception, all of the players below have surpassed 35.0 JAWS; roughly speaking, that’s the equivalent of seven five-win seasons, a point at which I start to take mid-career position players seriously. All WAR figures here refer to the Baseball Reference version, unless otherwise indicated.

One other thing to note: since my reference point for “old” WAR and JAWS figures dates back to January 2021, some portion of these players’ gains may be due to updates to bWAR itself, particularly via changes to 2019 and ’20 park factors and tweaks to 2017-20 Defensive Runs Saved that were announced in March, but also due to a second update to 2020 park factors that just went live on Tuesday. Read the rest of this entry »

Historically, we have made many data tables available for download in a comma-separated values (CSV) format text file. Most of our data grids are rather straight forward and can be translated easily into a CSV file to be consumed by your data analysis tool of choice. Starting today, we are making RosterResource Excel workbook downloads available for FanGraphs Members. You can find the download button to the right of the page underneath the RosterResource navigation.

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Martín Pérez has a plus changeup, and he relies on it often. The 30-year-old native of Guanare, Venezuela has thrown his “cambio” 24.6% of the time since coming to the Red Sox prior to the 2020 season. A four-seam circle delivered at an average velocity of 84.9 mph, it’s the pitch the southpaw was once told would be his ticket to the big leagues.

Perez discussed the art of the changeup prior to a recent game at Fenway Park.

———

Perez on his changeup: “I started throwing my changeup when I was 14 years old. Before that age, I just threw fastballs. I’d met couple of guys in Venezuela who played — Ramon Garcia, a righty with Houston, and Ernesto Mejia, who signed with Atlanta — and they told me not to throw breaking pitches, to just throw fastballs. As soon as I started my process to sign as a professional baseball player, I started to throw changeups, breaking balls, and fastballs.

“It’s important to have a changeup that will have the same arm speed as the fastball. You throw your fastball, and you throw your changeup, and they’re going to look the same. That’s why it’s so hard to hit. It’s hard for hitters to recognize that pitch, because they both have the same rotation. So, that was my focus.

“After I signed [with the Rangers] in 2007, the guy who was my boss at that time was [Director of Player Development] Scott Servais. In 2008, I played in [short-season] Spokane and it was a good year. I threw my breaking ball, my changeup, and my fastball. I had a big breaking ball. It was 12–6 and really good; I could throw it in any count. But then, in 2009, I went to Hickory, Low-A, and they told me, ‘Martín, you don’t have to throw more breaking balls. We want you to focus on your changeup, because that’s the pitch that’s going to take you to the big leagues.’ Read the rest of this entry »

As Kris Bryant helps the Giants fend off the Dodgers in the NL West division race, his replacement in Chicago seems like a lock to break his old team’s rookie home run record despite being older than Bryant is right now. Patrick Wisdom, who turned 30 on August 27, has swatted 25 home runs so far this season, coming out of nowhere to produce one of baseball’s most fascinating stat lines.

Prior to this season, Wisdom had just 27 games of big league experience, including two with the Cubs in 2020, who re-signed him to a minor league deal in January. Though he posted “ridiculous” numbers at the team’s alternate training site last season, he seemed more likely to provide bench depth for the big league club than be a regular, only to end up playing 83 games split between first base, third base and left field, take 279 plate appearances, and post a .256/.320/.579 slash line.

There remain questions of sustainability. Wisdom isn’t a true-talent 136 wRC+ player, but he’s certainly more of a viable big league bat than initially thought. ZiPS projected him for an 82 wRC+ before the season, which was much more bullish than Steamer’s 70 wRC+ prediction, but both are still a far cry from the actual numbers so far. As a result, both systems have seen significant improvement in the underlying talent given the sizable sample of good performance: His rest-of-season ZiPS projection has him up to a 104 wRC+, and Steamer has him at 93. Read the rest of this entry »