Rocker will be called up from Triple-A Round Rock to make his major-league debut Thursday in Seattle, Shawn McFarland of The Dallas Morning News reports.
The Rangers hadn't initially planned to promote Rocker to the big leagues in his first season back from Tommy John surgery, but the big right-hander has been so dominant that he's forced their hand. Rocker permitted six runs (three earned) over three innings in his third rehab start with the Rangers' rookie-level Arizona Complex League affiliate, but in seven outings since then between Double-A Frisco and Triple-A Round Rock, he's collected a 0.91 ERA and 47:4 K:BB over 29.2 innings. He has not thrown more than 72 pitches or gone more than five frames in a start, and Evan Grant of The Dallas Morning News has reported that the Rangers would like to keep Rocker at around 50 total innings for this season. If the club sticks to that number, it would leave Rocker with approximately 13.1 frames left in 2024.