Red Sox Trade Rivera for Cardinals Pitcher
Facing a deadline to restore injured players to its 40-man roster, Boston designated relievers Zack Kelly and Eduardo Rivera for assignment. Kelly, 31, had a 3.31 ERA in 17 appearances in 2026 but had no minor-league options remaining; Rivera, 23, struggled in four major-league appearances after pitching well in the minors. The Red Sox later traded Rivera to the St. Louis Cardinals for 18-year-old minor-league right-hander Juan García. Kelly’s immediate future was uncertain, with Boston having a limited window to trade, release or waive him.
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