Eduardo Rivera

Eduardo Yael Rivera (born June 13, 2003) is a Puerto Rican professional baseball pitcher for the Boston Red Sox of Major League Baseball (MLB). He made his MLB debut in 2026.

Career Oakland Athletics / Athletics The Oakland Athletics selected Rivera in the 11th round of the 2021 Major League Baseball draft. That summer, he played four games in the MLB Draft League and one game in the Arizona Complex League (ACL). Rivera spent the 2023 season with the Single-A Stockton Ports; in 16 games (12 starts) he posted a 2–7 win–loss record with a 5.34 earned run average (ERA) while striking out 75 batters in 69 innings pitched.

Rivera split time during the 2025 regular season between the High-A Greenville Drive and Double-A Portland Sea Dogs. The next day, before making an appearance for Worcester, the Red Sox added him to their major-league roster. Rivera made his MLB debut that evening, pitching scoreless innings in relief during a Red Sox loss to the New York Yankees at Fenway Park. Rivera was optioned back to Worcester following a start on July 22 against the Baltimore Orioles in which he allowed four earned runs in only of an inning. In four total appearances for Boston, he logged an 0–1 record and 6.30 ERA with 10 strikeouts over 10 innings of work. On September 1, the Red Sox placed Rivera on the 60–day injured list due to a lumbar strain, officially ending his season.