Groome was optioned to Triple-A Worcester on Wednesday, Pete Abraham of The Boston Globe reports.
Groome spent most of 2021 at High-A Greenville before a late-season promotion to Double-A Portland, and he's now set to open 2021 at Triple-A. The 23-year-old had a 5.29 ERA and 108:32 K:BB over 81.2 innings at High-A and 26 strikeouts in 15.2 frames at Double-A.