Eduardo Rivera Traded from Red Sox to Cardinals for Juan Carlos García

The St. Louis Cardinals acquired left-handed pitcher Eduardo Rivera from the Boston Red Sox in exchange for 18-year-old minor league pitcher Juan Carlos García. Rivera, a 23-year-old 6-foot-7 southpaw, made his MLB debut in 2026, posting a 6.30 ERA in 10 innings while dominating left-handed hitters (.067 BA allowed). In the minors, he went 7-2 with a 2.59 ERA and 71 strikeouts over 55.2 innings across Double-A and Triple-A.