Mark Edward Langston is an American former professional baseball left-handed pitcher. He played in Major League Baseball (MLB) for the Seattle Mariners (1984–1989), Montreal Expos (1989), California / Anaheim Angels (1990–1997), San Diego Padres (1998), and Cleveland Indians (1999). During a 16-year baseball career, Langston compiled 179 wins, 2,464 strikeouts, and a 3.97 earned run average (ERA).