Phillips Chalier Valdéz (born November 16, 1991) is a Dominican professional baseball pitcher for the Toros de Tijuana of the Mexican League.

[1] On December 16, 2010, he signed a minor league contract with the Tampa Bay Rays, but was released on May 1, 2011, and did not appear in a professional game in 2011.

[3][4][1] In 2018, Valdéz made 31 appearances split between Double–A Harrisburg and Triple–A Syracuse, compiling a 6–7 record and 2.73 ERA with 104 strikeouts across 135 innings pitched.

On June 8, Valdéz had his contract selected and he was called up to the major leagues for the first time, as the 26th man of a doubleheader versus the Oakland Athletics.

[12] On July 24, Valdéz made his Red Sox debut in the opening game of the delayed-start 2020 season, pitching two scoreless innings of relief in a 13–2 win over the Baltimore Orioles.

[13] On August 25, Valdéz pitched 1+2⁄3 scoreless innings to pick up his first MLB win in a 9–7 victory over the Toronto Blue Jays.

[14] Overall with the 2020 Red Sox, Valdéz appeared in 24 games, all in relief, compiling a 1–1 record with 3.26 ERA and 30 strikeouts in 30+1⁄3 innings pitched.

[21] Overall during the regular season, Valdéz made 28 relief appearances for Boston, pitching to a 2–0 record with 5.85 ERA while striking out 35 batters in 40 innings.

[15] Valdéz began the 2022 season as a member of Boston's bullpen, until being optioned to Worcester on May 2 as MLB rosters contracted from 28 to 26 players.

[36] During 2019 spring training, Valdéz's younger brother Mario died after suffering a heart attack at the age of 18.