Rays Select Chris Muller

The Rays announced they’ve selected reliever Chris Muller onto the major league roster. He’ll take the active and 40-man spots of Drew Rasmussen, who was placed on the 60-day injured list with a flexor strain.

Muller, 27, entered the professional ranks six years ago. Tampa Bay selected him in the 17th round of the 2017 draft out of UT San Antonio. The Dallas native has worked almost exclusively out of the bullpen for his entire career. He’s spent some time on the injured list but showed an impressive enough arsenal that Eric Longenhagen of FanGraphs named him the #46 prospect in a deep Tampa Bay system over the winter. Longenhagen praised his mid-90s fastball and a slider and split that both can miss bats but expressed concerns about his strike-throwing.

The 6’5″ hurler went unselected in last year’s Rule 5 draft. He was assigned to Triple-A Durham to open 2023 and has made 14 appearances there. Over 17 innings, he’s allowed nine runs (seven earned) with 19 strikeouts and ten walks. Muller worked 58 2/3 frames of 4.91 ERA ball in Triple-A last season; he’s up to a 4.64 ERA with an intriguing 27.6% strikeout rate but elevated 12.9% walk percentage at the top minor league level.

Muller adds an arm with some swing-and-miss capability to Kevin Cash’s bullpen. He’ll be in his first of three minor league option years, so the Rays can freely bounce him between Tampa and Durham for the extended future if he hangs onto his 40-man roster spot.