Seriously Though, How Is Brandon Woodruff Doing This?

Pitching analyst Lance Brozdowski has been on Brandon Woodruff since the Brewers right-hander returned from a 2023 shoulder surgery on July 6. Brozdowski has written about Woodruff twice, first breaking down the ways that he looks like a different pitcher this season. His second piece was titled “How Is Brandon Woodruff Doing This?” I’d like to really dig in and answer that question, both because when Brozdowski asks a question it’s usually a good one and because Woodruff’s numbers really are confusing. As Michael Baumann noted a few weeks ago, Woodruff’s return coincided almost exactly with Milwaukee’s recent unbeatable stretch. “If Woodruff is well and truly back,” Baumann wrote, “for my money he’s a bigger add than any starter who’s likely to get moved at the deadline.” Woodruff has gone 4-0 with a 2.29 ERA, a 3.73 FIP, and a 34.9% strikeout rate over his six starts, and he’ll likely be a huge part of the team’s playoff rotation, but whether he’s back is still very much an open question.
Before we get into everything, we should talk about Woodruff’s arsenal, which at least for a little while looked pretty different this season. A month ago at Brewer Fanatic, Matthew Trueblood analyzed Woodruff’s repertoire during his minor league rehab assignment, and wrote that in order to be successful, “Woodruff will need to reinvent himself.” The pitcher seemed to agree, at least at first. This season in the majors, he has thrown a four-seamer, sinker, changeup, cutter, curve, and sweeper. The cutter is new, with the sweeper replacing his traditional slider. However, he hasn’t thrown the sweeper since his second start (likely because it was the second game in a row the other team homered on the pitch), and he’s also drastically reduced his cutter usage over his last two starts. He’s also nearly evened out his fastball usage. In recent years, Woodruff led with his four-seamer, but now he’s throwing it 34% of the time and his sinker 31%, leading with the sinker against righties and the four-seamer against lefties. His curveball is down to 5% and his changeup has held steady at 17%. In other words, Woodruff is throwing a fastball 65% of the time, and that number jumps to 77% of the time if you count the cutter:

Let’s start with the reasons for suspicion, and please note that this section makes up five full paragraphs. Luck is a big component here. Woodruff is currently running a .143 BABIP and a 100% strand rate. Eight of the nine earned runs he’s allowed have come on home runs. Those are massively unsustainable numbers. The league averages a .289 BABIP and 72.5% strand rate. Even though he’s spent his entire career pitching in front of an excellent Milwaukee defense, Woodruff has never run a BABIP below .269 or a strand rate above 82% (except in 2023, when he only made 11 starts). No matter what else happens, we should expect his BABIP to add at least 100 points and his strand rate to drop by at least 20% going forward. Read the rest of this entry »








