Wacha will slot in as Boston's fourth starter, Chris Cotillo of MassLive.com reports.
Red Sox manager Alex Cora confirmed that news Tuesday morning after Wacha worked around four hits to throw three scoreless innings Monday. The right-hander's overall numbers in 2021 -- 5.05 ERA and 4.47 FIP in 29 games (23 starts) for Tampa Bay -- may not entice fantasy managers, but Wacha's final eight appearances tell a different story. He posted a 3.20 ERA and 3.14 FIP to end the season, while holding batters to a .193 batting average and .331 slugging percentage. The difference, he told Christopher Smith of MassLive.com, is that he scrapped the cutter he was throwing in favor of throwing his curveball more often.