A’s Place Mason Miller On Injured List With Broken Left Hand

3:10pm: Gallegos now tweets that Miller “did not pound the table out of frustration” but rather “put his hand down awkwardly” while getting ready to do an exercise.

3:02pm: The A’s indeed announced that Miller has been placed on the 15-day IL due to a fractured left hand. He’s the corresponding move to activate right-hander Ross Stripling from the 15-day IL.

2:47pm: The Athletics are placing star closer Mason Miller on the 15-day injured list due to a fractured pinkie finger in his left (non-throwing) hand, reports Martin Gallegos of MLB.com. Miller suffered the injury when he pounded a padded table in the Athletics’ training room out of frustration earlier this week, per Gallegos.

Miller has been one of the most oft-speculated names on the trade market throughout the season. The A’s were considered long shots to trade the right-hander anyhow, given that they control him for five additional seasons. ESPN’s Buster Olney reported earlier this week that Miller was “out of play” on the trade market. Whether that was due to this injury — Olney’s report came yesterday, while Miller’s injury occurred Monday, per Gallegos — or whether the A’s had simply decided the offers weren’t going to be sufficient isn’t clear.

Regardless, it now seems quite likely that Miller will remain with the A’s through the deadline. A trade is still technically possible, but it was already going to be difficult to line up on valuing five years of control over perhaps MLB’s most dominant reliever. Throwing an injury into the mix only further complicates the scenario and makes it more difficult for the A’s to extract max value.

The 6’5″ Miller is a flamethrowing powerhouse who’s averaged 100.9 mph on his heater this season, per Statcast, and fanned a comical 45.8% of his opponents. This year’s 9.2% walk rate is a step forward from last year’s 11.5% mark. Opponents rarely make contact against Miller in the first place, and when they do, it’s typically feeble in nature. He’s yielded just an 86.6 mph average exit velocity and a putrid 29% hard-hit rate on the season. Only four of the batted balls against Miller have been “barreled” as measured by Statcast. Miller’s gargantuan 20.3% swinging-strike rate leads all pitchers in MLB (min. 10 innings pitched). He’s sitting on a 2.21 ERA with even better marks from metrics like FIP (1.68) and SIERA (1.62).

Miller entered the season with under one year of major league service time. He’s under club control for another five seasons beyond the current campaign, though he’ll finish the 2025 season with 2.166 years of service time, making him a surefire Super Two player. That’ll let him go through the arbitration process four times rather than the standard three. Either way, he can’t become a free agent until the 2029-30 offseason.

Miller’s utter dominance and that mountain of club control made him one of the most coveted players on the trade market, although it bears repeating that a deal was in no way a strong likelihood. Assuming he does indeed make it through the season on Oakland’s roster, it’s likely that trade chatter surrounding the power-armed 25-year-old will rekindle this offseason.