Editor’s Note: An abridged version of this study appeared at FiveThirtyEight on August 17, 2020 under the title “What Really Gives Left-Handed Pitchers Their Edge?”

Left-handed pitching has long been one of the most prized commodities in professional baseball. Teams strive to obtain lefty pitchers, and those pitchers recognize their competitive edge. Two-sport athlete Tom Glavine explained his career choice this way: “I love both sports, but the deciding factor was, being a left-handed pitcher, I had a huge advantage in baseball because of that, and I didn’t have that type of advantage in hockey.” Even a century ago, Tris Speaker expressed the sport’s reverence for southpaws – if falling short as a trade analyst – when he opined that “taking the best left-handed pitcher in baseball and converting him into a right fielder is one of the dumbest things I ever heard.”

Major league rosters reflect this preference for lefties today. Although just 10% of American men throw with their left hand, fully 28% of innings thrown by major league pitchers come from the left side. And before you blame lefty relief specialists for this disparity, consider that southpaws also make 29% of starts. Any way that you cut the data, lefty pitchers make it to the big leagues about three times as frequently as righties, given their share of the general population. What accounts for this huge surplus of southpaws? Read the rest of this entry »

Tom Grieve had a relatively nondescript playing career. From 1970-1979, the now-72-year-old former outfielder logged 474 hits, 65 of which left the yard, and a 100 wRC+. Those numbers came primarily with the Texas Rangers, who had drafted Grieve out of the University of Michigan while the franchise was still located in Washington DC.

Grieve is a product of Pittsfield, Massachusetts, and while he grew up rooting for the New York Yankees, one of his biggest thrills came in his home state’s most-famous sports venue. The date was May 5, 1974, and the event itself was proceeded by a certain amount of trepidation.

“Billy Martin was the manager at the time,” explained Grieve, who is now a TV analyst for the Rangers. “Jim Fregosi and I had been playing against left-handed pitchers, and Mike Hargrove and Jim Spencer had been playing against right-handed pitchers. Anyway, the people of Pittsfield had called the Red Sox and were somehow able to set up ‘Tom Grieve Day’ at Fenway Park between games of a Sunday doubleheader. Usually when there’s a day for someone at a ballpark, it’s for a Hall of Fame player, so I can remember going to Boston knowing that it was going to happen, and being a little bit embarrassed.”

Not to mention wary of what his manager might think. Not only was Grieve a 26-year-old platoon player, Martin had donned pinstripes for much of his own playing career. Moreover, Martin was notoriously as combative as they come. Read the rest of this entry »

Not for nothing did they call Tom Seaver “The Franchise.” When he debuted in 1967, the Mets lost 101 games, their fifth time in triple digits in six seasons of existence. Two years later, he led the team not only to its first winning record but to an upset of the powerhouse Baltimore Orioles in the World Series. A month shy of his 25th birthday, he had given “the Miracle Mets” a leg up against the crosstown Yankees, who were going through a fallow period after dominating baseball for four and a half decades, and in doing so he became an all-American icon. Uniting a powerful, efficient “drop and drive” delivery with a cerebral approach and impeccable command, he would go on to check virtually every important box in his 20-year major league career, winning three Cy Young awards, making 12 All-Star teams, leading his league in a triple crown category 11 times, tossing a no-hitter, surpassing the 300-win and 3,000-strikeout milestones, and setting a record with the highest share of a Hall of Fame vote when he became eligible in 1992.

Last summer, in celebrating the 50th anniversary of that championship, the Mets announced that they would officially designate the address of Citi Field as 41 Seaver Way (after his uniform number, which they retired in 1988), and dedicate a statue to “Tom Terrific.” Alas, by that point, Seaver’s family had gone public with the news that he had been diagnosed with dementia and was retiring from public life; he had battled health problems for years, including multiple bouts with Lyme disease. He missed the anniversary festivities and never lived to see the statue’s completion. Seaver passed away on Wednesday at age 75. According to the National Baseball Hall of Fame, he died peacefully in his sleep from complications of Lewy body dementia and COVID-19.

Seaver spent 11 1/2 of his 20 seasons with the Mets, departing in rather traumatic fashion first on June 15, 1977, in a trade to the Reds that was dubbed “The Midnight Massacre,” and then again in 1983, when after returning to New York via a trade and spending a season back in Queens, he was left unprotected in what was called the free agent compensation draft. He spent 2 1/2 years with the White Sox and his final half-season aiding the 1986 Red Sox’s pennant push, though a late-season knee injury kept him off the postseason roster and he could only watch as his former team won its second World Series.

Seaver was so durable that he made at least 32 starts and threw at least 200 innings in the first 13 seasons of his career and in 16 in all, the last at age 40. He finished with an ERA+ of at least 100 while qualifying for the ERA title in 18 of those seasons, including his final one at age 41; that’s tied with Walter Johnson for fourth behind only Greg Maddux, Roger Clemens, and Cy Young, all with 19. His 3,640 strikeouts still rank sixth all-time, while his 311 wins rank 18th. He’s seventh in shutouts (61), 15th in starts (647), 19th in innings (4,783), walks (1,390) and home runs allowed (380), and in a virtual tie for 22nd among pitchers with at least 2,500 innings in ERA+ (127).

On the advanced statistical front, his 109.9 bWAR (including offense) ranks sixth behind only Johnson, Young, Clemens, Pete Alexander, and Kid Nichols. His seven-year peak score is “only” 20th, but his 84.6 JAWS is eighth; every pitcher ahead of him save for Clemens last pitched in the majors prior to World War II. Read the rest of this entry »

Even in a wackily truncated season like this one, the trade deadline serves as an important landmark in the playoff hunt. While players will still be released and signed, lose their jobs and get injured, the dramatic changes in team quality are largely over. For a projectionist such as myself, it also comes as a relief as I no longer have to worry about spending time crunching the numbers only to have a 14-player, three-way trade go down just after I file an article. The players teams have on their rosters now are more or less the ones they have at their disposal over the rest of the season.

Before we get to the division-by-division standings updates, let’s take a quick look at how the last few days altered teams’ playoff odds. I projected the rest of the season for each team based on both their roster prior to the deadline’s moves and their roster as it stands post-deadline. I then compared the results to see which club saw the biggest rest-of-season gains and losses.

Read the rest of this entry »

For the last 15 years, Yusmeiro Petit has cast a spell over opposing hitters. He’s never thrown hard — his highest average fastball velocity was 89.6 mph in 2017, more than a decade into his career. He’s never been an All-Star, never received award votes. He’s been sketchy at times — his rookie season for the Florida (!) Marlins produced a 9.57 ERA. He didn’t pitch in the majors in 2010 or 2011. Through it all, however, he’s kept going, showed up and provided competent innings. He’s almost 36, and it feels like he might pitch until he’s 80.

That consistency is merely an illusion, however. When Petit first made the majors, he was pretty bad against lefties. Most righties get a little bit worse against left-handed batters; they strike out roughly two percentage points fewer opponents and walk roughly two percentage points more. Petit, on the other hand, turned into a pumpkin:

That split is through the end of 2017. I’m now going to do something that I strongly urge you not to do in your investigations of platoon splits — chop them up into smaller pieces. Since the beginning of the 2018 season, Petit’s platoon splits look different:

It’s a small sample, but I’m inclined to believe it. From 2008 (the beginning of pitch tracking data) to 2017, Petit threw his changeup to lefties 22.1% of the time. Since the beginning of 2018, he’s more or less doubled it, to 41.3%. Changeups are a righty’s best friend against lefties, so the improvement makes sense. Read the rest of this entry »

The closing bell rang on the trade deadline yesterday and, as always, many prospects were moved. I have the young players traded since early this month ranked below. Most of the deals these prospects were a part of were analyzed at length on this site. Those pieces can be found here, or by clicking the hyperlink in the “From” column below. I’ve moved all of the players below to their new orgs over on The Board, so you can click through and see where they rank among their new teammates; our farm rankings, which now update live, also reflect these changes, so you can see where teams’ systems stack up post-deadline.

A couple quick notes before I get to the order. The evaluations of players at the very bottom of the list (35 FV prospects) who weren’t on offseason prospect lists at all are subject to change as I continue to learn more about them. Follow the FanGraphs Prospects Twitter account or go to fangraphs.com/prospects for updates. Also, I’ve included a couple of post-prospect players in the order so you can get an idea of where I value them now as opposed to at their prospect peak. Both players, former top 100 guys, are highlighted in orange below. Read the rest of this entry »

The San Diego Padres and Cleveland Indians reached a whopper of an agreement on trade deadline day, with Cleveland sending pitcher Mike Clevinger, outfielder Greg Allen, and a player to be named later to the Padres for shortstop Gabriel Arias, catcher Austin Hedges, pitcher Cal Quantrill, first baseman Josh Naylor, pitcher Joey Cantillo, and shortstop Owen Miller. A nine-player trade is a significant deal, and with so many familiar names and a legitimate major league ace in the mix, this is one that will be looked back on for a long time, regardless of how it works out for either side.

The Padres have seen the wisdom of pushing in all of their chips for some time, though not always with the right cards in their hand. Just a few months into A.J. Preller’s stint as the general manager, the team decided to go all-in coming off a 77-85 season, bringing in Matt Kemp, Justin Upton, Wil Myers, James Shields, Derek Norris, and Will Middlebrooks in a two-month period over the 2014-2015 offseason. Problem was, the team wasn’t holding a high pair in that particular card game, and with the team’s talent otherwise generally unimpressive, San Diego actually won fewer games in 2015 than in 2014. Those moves cost them money, time, and players such as Yasmani Grandal, Trea Turner, Max Fried, Joe Ross, and Zach Eflin. That the team later turned a bag of lemons into liquid gold by landing Fernando Tatis Jr. for a struggling James Shields was a nice post-credits vignette for this tale of tragedy and heartbreak, but was hardly a reasonable expectation at the time of these moves.

In 2014, the Padres traded players they needed for players they didn’t.

2020 is a whole different story. This time around, the Padres are indisputably a serious contender, a 21-15 team, one that our projected standings now peg with a 98% chance of making the playoffs. Nor does this kind of performance appear to be any kind of fluke, at least in the eyes of the ZiPS projections. ZiPS saw Wild Card upside for the Padres in 2019 — which didn’t happen — but forecast an even better team in 2020, one it projected with an 87-75 record and a 52% chance of making the playoffs back before the season’s postponement. Read the rest of this entry »

Sunday’s seven-player deal between the Mariners and Padres was the deadline’s biggest trade so far, impacting this year’s playoff race and both teams’ roster construction for years to come. While the most immediate effects will be seen in San Diego, the Mariners continued to collect talented, young players with their spyglass fixed on a long-term rebuild by acquiring Taylor Trammell, Ty France, Andres Muñoz and Luis Torrens (covered here) in a trade centered around catcher Austin Nola.

The headline prospect of the package is Trammell, a 23-year-old 50 FV prospect (meaning I expect him to be a an everyday player who generates around 2 to 2.5 annual WAR — commensurate with a good everyday player — over the course of his pre-free agency seasons) who was with San Diego’s big league club throughout spring training, then played during summer camp intrasquads, and has since been at the Padres’ alternate training site at the University of San Diego. Trammell spent all of 2019 at Double-A, albeit with two different orgs because he was also part of last year’s massive, three-team Trevor Bauer deadline deal that sent Trammell from Cincinnati to San Diego; Seattle is his third organization in 13 months.

Trammell is ranked toward the top of the 50 FV tier of prospects, 68th in all of baseball, because a) he’s fairly close to the big leagues and b) he has a few core attributes that I consider especially important. Chiefly, Trammell has a good idea of the strike zone, and he’s a good athlete who has good on-field makeup/competitiveness. I know the latter two sound hokey and perhaps antiquated, but they do drive some of my thinking related to prospect floor or certainty because, anecdotally, I think good athletes who try hard tend to turn into good players.

A career .270/.363/.406 hitter, Trammell has the ball/strike recognition (12% career walk rate) and contact potential to one day be a leadoff man. I say contact potential because I don’t think his bat is quite as polished as it appeared to be at the lower levels. He’s a short-levered hitter who can turn on pitches on the inner third of the plate, and he grinds out long, tough at-bats, but while Trammell has some all-fields spray ability, he struggled with velocity up and away from him during the spring and summer intrasquads. To my eye, he has done some tinkering with his hitting footwork, which may have been an attempt to tease out more in-game power, though I’m skeptical that will ever be part of the profile. I think a contact/on base-oriented approach fits best with Trammell’s swing and physical ability, though admittedly punting on his power potential (those Futures Game rockets he hit a few years ago were highly unusual) caps his ceiling. It’s tough to be an impact player without thump, which is part of why I have a solid regular FV on Trammell rather than a big, star-level one. Read the rest of this entry »

For the full introduction to the Replacement-Level Killers series, follow the link above, but to give you the CliffsNotes version: yes, things are different this year, and not just because the lone trade deadline is later today, August 31. We’ve got a little over a month’s worth of performances to analyze (sometimes less, due to COVID-19 outbreaks), about four weeks still to play, and thanks to the expanded playoff field, all but seven teams — the Pirates, Angels, Red Sox, Mariners, Royals, Rangers, and Orioles — are within two games of a playoff spot.

While still focusing upon teams that meet the loose definition of contenders (a .500 record or Playoff Odds of at least 10%), I’ll incorporate our Depth Charts’ rest-of-season WAR projections into the equation, considering any team with a total of 0.3 WAR or less — I lowered the threshold by a point, starting with the third base/center field installment, to keep the final lists from getting too overgrown — to be in the replacement-level realm (that’s 0.8 WAR over the course of 162 games, decidedly subpar). I don’t expect every team I identify to upgrade before the trade deadline, given other context (returns from injury, contradictory defensive metrics, and bigger holes elsewhere on the roster), and I’m not concerned with the particulars of which players they might pursue or trade away.

Note that all individual stats in this article are through August 29, but the won-loss records and Playoff Odds include games of August 30.

This time, I’m covering both left and right fielders, with a very brief nod in the general direction of designated hitters as well. Thankfully, my strategy of waiting for the left field herd to thin proved to be the right call, as that list shrank from nine to six (and right field from six to five) after some positive regression over the past few days. Read the rest of this entry »

The flurry of deals made by the San Diego Padres on Sunday culminated with a massive trade with the Seattle Mariners. The headlining player headed to Southern California is catcher Austin Nola, along with two relievers, Austin Adams and Dan Altavilla. Ben Clemens will address the newest additions to the Padres bullpen and Eric Longenhagen will have the analysis of the prospect/recently-prospect haul the Mariners received from the Padres — Taylor Trammell, Andres Muñoz, and Ty France — a little later this morning. The fourth player headed to the Northwest, Luis Torrens, is likely to take Nola’s place on the Mariners roster as their starting catcher.

With the Padres acquiring Jason Castro from the Angels earlier in the day, the addition of Nola completes an overhaul of the Padres catching corps. As a group, the Padres catchers had put up a collective .146/.228/.291 slash line, good for a 45 wRC+ and -0.3 WAR. They weren’t the worst hitting group of backstops in the majors this year, but it was a clear need for the Padres, who have their eyes on a deep postseason run.

Castro is a fine offensive upgrade in his own right but the easy answer to the Padres problem was to simply add the best hitting catcher in the majors in 2020. That’s exactly what they’ve done in adding Nola. His .380 wOBA ekes out J.T. Realmuto by just a single point, his 145 wRC+ is six points higher than the star Phillies backstop, and they’re tied with 1.2 WAR apiece. Read the rest of this entry »