Matthew James Foster (born January 27, 1995) is an American professional baseball pitcher for the Chicago White Sox of Major League Baseball (MLB). He made his MLB debut in 2020.
On July 29, 2020, Foster was called up to the major leagues. He made his MLB debut on August 1, pitching a scoreless inning of relief and earning a win in the process. With the 2020 Chicago White Sox, Foster appeared in 23 games, compiling a 6-1 record with 2.20 ERA and 31 strikeouts in 28+2⁄3 innings pitched.