This postseason, pitchers have allowed a .311 wOBA and a 3.74 ERA, down from .318 and 4.33 during the regular season. That part’s not terribly surprising. Since the start of the Wild Card era in 1995, the league’s postseason ERA is 3.85, nearly half a run below the regular season ERA of 4.29. The thing that caught my eye was that this year’s .311 wOBA is 21 points lower than its .332 xwOBA. In fact, for as long as we’ve been calculating xwOBA, wOBA has underperformed it in the playoffs:

This year’s gap is the largest, but it’s hardly an outlier. There’s a big gap between ERA and FIP during the postseason. Pitchers have outperformed their FIP 24 times in the last 29 postseasons. Over that period, they’ve run an ERA of 3.85 and a FIP of 4.15. They’re performing better overall, but they’re also outpitching their FIP to the tune of .3 runs per game. I started thinking about the causes that might explain these discrepancies, and I realized that our new postseason leaderboards would allow us to break them down in some cool new ways. Read the rest of this entry »

Max Scherzer hadn’t pitched in 36 days, but when a future Hall of Famer says he can go, it’s hard to say no. That’s the spot that the Rangers found themselves in, and up two games to none in the ALCS, they could afford a clunker if they had to. Unfortunately, that’s what they got. Scherzer surrendered five runs over four innings; Cristian Javier no-hit Texas into the fifth. Though Houston’s hurler didn’t remain unblemished, the Rangers couldn’t overcome their early deficit, and the Astros narrowed Texas’ series lead with an 8–5 win.

The first inning went innocently enough, though Scherzer allowed a pair of well-struck fly balls that hinted at the trouble to come. Ahead 0–2 on Yordan Alvarez to begin the second, the veteran went with a back-foot cutter that, well, hit Alvarez in the back foot. After punching out José Abreu, Scherzer walked Kyle Tucker on five pitches, then yielded a 104.8 mph frozen rope to Mauricio Dubón on a slider that hung up. Jeremy Peña popped out, and for a second, Scherzer seemed to be close to getting out of a bases-loaded jam. Instead, he spiked an 0–1 slider to no. 9 hitter Martín Maldonado, he of the 66 regular-season wRC+, to bring home Alvarez. On the very next pitch, Maldonado ripped a 101.1 mph single past third baseman Josh Jung, driving in two more:

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In Game 3 of the Twins/Astros ALDS, the subject of Sonny Gray’s sweeper came up in the broadcast booth. That set the stage for Adam Wainwright to clear up some confusion that dates back a ways, and put forth an answer to the question that has been spinning around the league for a while: What exactly is a sweeper?

Here’s the clip:

Adam Wainwright explains the difference between a sweeper and a slider ? pic.twitter.com/vdtCh9EU6W

— FOX Sports: MLB (@MLBONFOX) October 10, 2023

In just over a minute (and with deftly added pauses for the purposes of game calling), Wainwright covered a lot of ground, first pointing out the shape of the sweeper as compared to a traditional slider, then going on to scratch the surface of how the pitch is thrown and how that impacts its shape. At one point during his spiel, he chuckled at the camera, visibly concerned about how little time he had to explain something so complicated. So with the benefit of a much more flexible word count than he was afforded in the booth, let’s break down Wainwright’s breakdown, beat-by-beat, and see if we can illustrate and expand on what he was talking about by taking a look at some of 2023’s sweepingest pitchers. Read the rest of this entry »

As I’ve done for the past few years, I’m going to be grading each eliminated postseason manager on their decision-making. We spend the year mostly ignoring managers’ on-field contributions, because to be honest, they’re pretty small. Using the wrong reliever in the eighth inning just doesn’t feel that bad on June 22; there are so many more games still coming, and the regular season is more about managing the grind than getting every possible edge every day. The playoffs aren’t like that; with so few games to separate wheat from chaff, every last ounce of win probability matters, and managers make personnel decisions accordingly. What better time to grade them?

My goal is to evaluate each manager in terms of process, not results. If you bring in your best pitcher to face their best hitter in a huge spot, that’s a good decision regardless of outcome. Try a triple steal with the bases loaded only to have the other team make four throwing errors to score three runs? I’m probably going to call that a blunder even though it worked out. Managers do plenty of other things — getting team buy-in for new strategies and unconventional bullpen usage behind closed doors is a skill I find particularly valuable — but as I have no insight into how that’s accomplished or how each manager differs, I can’t exactly assign grades for it.

I’m also purposefully avoiding vague qualitative concerns like “trusting your veterans because they’ve been there before.” Playoff coverage lovingly focuses on clutch plays by proven performers, but Josh Jung and Geraldo Perdomo have been great, too. Forget trusting your veterans; the playoffs are about trusting your best players. Zack Wheeler is important because he’s a great player, not because of the number of playoff series he’s appeared in. There’s nothing inherently good about having been around a long time; when I’m evaluating decisions, “but he’s a veteran” just doesn’t enter my thought process.

I’ve already covered the losing managers of the Wild Card round and the other division series eliminations. Today, it’s Brian Snitker’s turn. Read the rest of this entry »

Every play in a scoreless postseason game is pivotal. The Phillies, despite being the better team on paper with a 1–0 series lead in the bag, could ill afford to give away cheap outs on either side of the ball. Six days ago, Brandon Marsh listed the lessons the team had learned from blowing a lead in Georgia two nights previous: “Put them out of it. Finish the job. Don’t let them climb back in the game.”

Trea Turner committed two errors in that game, the second of which led directly to Atlanta’s first run of the playoffs. It snapped the best offensive team of the regular season back to life and arguably started a stunning comeback that could’ve knocked the Phillies off their axis.

Aaron Nola was excellent in his first two postseason starts of 2023, but he’s been prone to big innings both in this regular season and last year’s playoffs. The last thing he needed was one of the fastest players in the league to reach base and cause trouble. Read the rest of this entry »

Both the Phillies and Diamondbacks entered this Championship Series on a playoff tear, combining for just one loss during their four series wins. But in the battle for the NL pennant, one team’s good fortune would have to end, and so far, Arizona has been unable to deal with the buzzsaw that is Philadelphia’s roster. A day after a close loss headlined by the three home runs Zac Gallen surrendered, the Phillies hit another trio of dingers off the Diamondbacks’ no. 2 starter, Merrill Kelly, and it only continued downhill from there.

While playoff games have been increasingly defined by the reliever parades enabled by an abundance of off days, this game was a battle of two workhorse starters. Aaron Nola and Kelly both rank in the top 10 in baseball in innings over the past two years, and are consistently available to go deep into games. A lot happened in the final three innings on Tuesday, a stretch that exposed the stark difference in the quality of these two bullpens, but we can focus much of our attention on the rotation members dueling from each team.

Nola’s performance this year was uncharacteristically poor by his standards. He’s always possessed some of the best command in baseball, and he throws a hellacious two-planed knuckle curve as his strikeout pitch. But despite that, he had a 101 ERA- and 90 FIP- this season. His strikeout and walk rates were still great, but his home run rate ballooned, as he couldn’t keep his pitches away from the middle of the plate. His pitches in the “heart” zone, as measured by Statcast, were too predictable, costing him seven runs compared to average after dominating that area previously. It meant that his results had a hard ceiling despite having great stuff and avoiding free baserunners. But his six scoreless innings in Game 2 brought his ERA this postseason down to a tiny 0.96; more impressively, he hasn’t allowed a single home run in his three playoff starts. Let’s see how his arsenal shut down Arizona’s bats. Read the rest of this entry »

As I’ve done for the past few years, I’m going to be grading each eliminated postseason manager on their decision-making. We spend the year mostly ignoring managers’ on-field contributions, because to be honest, they’re pretty small. Using the wrong reliever in the eighth inning just doesn’t feel that bad on June 22; there are so many more games still coming, and the regular season is more about managing the grind than getting every possible edge every day. The playoffs aren’t like that; with so few games to separate wheat from chaff, every last ounce of win probability matters, and managers make personnel decisions accordingly. What better time to grade them?

My goal is to evaluate each manager in terms of process, not results. If you bring in your best pitcher to face their best hitter in a huge spot, that’s a good decision regardless of outcome. Try a triple steal with the bases loaded only to have the other team make four throwing errors to score three runs? I’m probably going to call that a blunder even though it worked out. Managers do plenty of other things – getting team buy-in for new strategies and unconventional bullpen usage behind closed doors is a skill I find particularly valuable – but as I have no insight into how that’s accomplished or how each manager differs, I can’t exactly assign grades for it.

I’m also purposefully avoiding vague qualitative concerns like “trusting your veterans because they’ve been there before.” Playoff coverage lovingly focuses on clutch plays by proven performers, but Evan Carter and Corbin Carroll have been great too. Forget trusting your veterans – the playoffs are about trusting your best players. Bryce Harper is important because he’s a great player, not because of the number of playoff series he’s appeared in. There’s nothing inherently good about having been around a long time; when I’m evaluating decisions, “but he’s a veteran” just doesn’t enter my thought process. I’ve already covered the losing managers of the Wild Card round and the ALDS. Dave Roberts is up next.
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PHILADELPHIA – The last time the Arizona Diamondbacks won a game in the NLCS, Randy Johnson took the win and Erubiel Durazo hit the game-winning home run off Tom Glavine. It’s been a minute.

When Diamondbacks ace Zac Gallen took the mound in Philadelphia, he was hoping to make a dent in that history; the Phillies have been red hot all October, but so has Arizona, and Gallen’s arm is one of the best weapons the D-backs have. But Kyle Schwarber hit the first pitch Gallen threw off the video board on the facing of the second deck at Citizens Bank Park. A minute? The Phillies took the lead in seconds. Two batters later, Bryce Harper crushed another fastball out to right center. It wasn’t quite over before it began, but the Phillies took the lead on the first pitch they saw and never gave it up.

“The reality is we were probably going to lose a game at some point,” Evan Longoria offered after the game, attempting to put the defeat in perspective. But the Phillies roughed Gallen up early and held off a series of late rallies to win 5-3. Surely it was not the manner of defeat anyone from the Diamondbacks had in mind. Read the rest of this entry »

Have you ever seen one of those horror movies with an unstoppable villain? They might get knocked down. A truck might run them over. They might fall out of a plane, or off a bridge, or into a bottomless pit. But then the camera cuts just so, and there’s that silhouette, lurching back into view, pursuing our protagonist despite the fact that they should have been down for the count.

I’m not making any fandom or value judgments here, but if you’re rooting against the Astros, they can feel like a movie monster. The Rangers did the baseball equivalent of knocking them over the head with a club in ALCS Game 2. They came out swinging against Justin Verlander last night to some success, but they really hit the accelerator against Framber Valdez in the first inning on Monday.

Marcus Semien smacked a first-pitch sinker past Jeremy Peña. Corey Seager blooped a first-pitch sinker into left. A batter later, Adolis García lined a first-pitch sinker into right for an RBI single. Mitch Garver never saw a sinker, but he did muscle the first in-zone pitch he saw to left, a sinking liner that brought home another run. Sprinkle in a bit of bad Houston luck — Valdez fumbled a comebacker for an error, Nathaniel Lowe hit a seeing-eye single on the kind of weak grounder that Valdez usually feasts on — and suddenly it was 4–0 Rangers. Read the rest of this entry »

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 »