Luke Weaver’s Sore Hamstring Trips Up Yankees Bullpen

Tireless reporter Jeff Passan of ESPN reported late Monday night that the hamstring pain that caused Yankees closer Luke Weaver to be held out of Sunday night’s game against the Dodgers would land him on the IL, for as long as 4-6 weeks, with a more specific timetable to be presented at a later time. The extent of Weaver’s injury was previously unknown, as he was still in the trainer’s room well after the final pitch, through the end of postgame media access.
Weaver has been nearly flawless all season — allowing just three runs in 25 2/3 innings across his 24 appearances, though two of those runs have come in his last three games — and in late April, he took over as the team’s closer for Devin Williams, who was removed from the role after his atrocious start. While Weaver’s microscopic 1.05 ERA probably isn’t for real, given his more “normal” 3.04 FIP, even the latter number makes him one of the most important members of the New York relief corps, and losing him for a significant amount of time is a blow. Weaver represents one of the most successful rotation-to-bullpen conversions in recent memory, going from a struggling journeyman starter, who was released and then later claimed on waivers in 2023, to being a candidate for his first All-Star appearance this July. Since his transitioning to the bullpen, which also came with a reinvention of his delivery that featured a minimalist windup, Weaver has put up a 2.46 ERA and a 3.26 FIP over 109 2/3 innings. He also gave up just one hit across his four World Series appearances last October.
While this can hardly be considered good news, the impact of the bad news is mitigated by a couple of factors. First, Weaver’s injury comes at a time when the Yankees have a 5 1/2-game lead in the AL East. That’s certainly not an insurmountable lead, but it’s a comfortable one at this point of the season. Back in April, our preseason projections had the Yankees with only a 31% chance of winning the division, and ZiPS was even less confident, at 24%. As of Tuesday morning, these divisional probabilities are at 89% and 86%, respectively. The ZiPS number factors in Weaver’s injury, projecting him to miss a full six weeks as the worst-case scenario, in order to illustrate this point: The Yankees only get a 0.8% percentage bump if he happens to miss the minimum amount of time before he can come off the IL, meaning they’re in fairly strong shape either way. Read the rest of this entry »