White Sox reinstate LHP Aaron Bummer

The White Sox announced that left-hander Aaron Bummer has been activated from the injured list. No corresponding move is necessary at this time, as the club is allowed to carry 27 players on their active roster for Sunday’s doubleheader, instead of the usual 26.

Bummer, 28, landed on the injured list two weeks ago due to a knee issue. This is the sixth straight season of Bummer appearing out of the club’s bullpen, having thrown 198 career innings with a 3.23 ERA, 26% strikeout rate, 11% walk rate and 67.9% ground ball rate. He’s been moving up the depth chart to higher leverage responsibilities, having notched 67 holds in that time. He got off to a bit of a slow start this year, logging a 4.91 ERA over his first 11 innings, though it’s possible this knee issue has been a factor.

Bummer and Garrett Crochet were set to be the club’s top lefties coming into the season, though Crochet underwent Tommy John surgery in April and Bummer has been on the shelf for the past couple of weeks. In that time, the club has turned to Bennett Sousa and Tanner Banks as bullpen southpaws, who have held their own in limited action so far. 

Sousa has an ERA of 3.46 through 13 innings, though his 17% strikeout rate and .216 BABIP suggest there might be a bit of good luck buoying that performance. Similarly, Banks has a 3.00 ERA through 18 innings, though with a 17.6% strikeout rate and .216 BABIP. Both of them have options and could be sent down at some point before Tuesday’s game, when the club will need to shrink the size of their roster back down to 26.