BOSTON, MA – The Boston Red Sox have made several roster adjustments, including recalls, an injury placement, and a minor league assignment.
Transactions
- Recalled RHP Cooper Criswell from Triple-A Worcester
- Recalled RHP Zack Kelly from Worcester
- Placed RHP Nick Burdi on the 15-Day Injured List (right foot contusion)
- Optioned RHP Richard Fitts to Worcester
Player Profiles & Season Performance
Cooper Criswell, 28, has made three appearances for Boston this season, allowing eight runs (five earned) over 4.1 innings. In Triple-A Worcester, he has excelled, posting a 1.52 ERA (5 ER/29.2 IP), 0.94 WHIP, and 38 strikeouts across seven games (six starts). A 2018 13th-round pick by the Angels, Criswell has played for Los Angeles (2021), Tampa Bay (2022-23), and Boston (2024-25), compiling a 4.78 ERA over 41 Major League games (20 starts).
Zack Kelly, 30, has pitched eight games for Boston in 2025, recording an 8.25 ERA (11 ER/12.0 IP) and 11 strikeouts. His Triple-A numbers match those totals over 11 games (one start). Signed as a non-drafted free agent by Oakland in 2017, Kelly has spent his MLB career with Boston (2022-25), amassing a 4.52 ERA over 78 games (three starts).
Nick Burdi, 32, has impressed in limited Red Sox action, throwing 5.1 scoreless innings over four relief appearances. His Triple-A Worcester campaign has been dominant, boasting a 4-0 record, four saves, 0.48 ERA (1 ER/18.2 IP), 26 strikeouts, and 0.80 WHIP. A 2014 second-round pick by Minnesota, Burdi has made 35 MLB appearances for Pittsburgh (2018-20), Chicago (2023), New York (2024), and Boston (2025).
Richard Fitts, 25, started against Los Angeles last night, bringing his season total to five starts (0-3, 4.71 ERA, 11 ER/21.0 IP). The Alabama native—selected in the 2021 sixth round by the Yankees—has posted a 3.24 ERA (15 ER/41.2 IP) with 24 strikeouts in nine MLB starts for Boston (2024-25).
