Mark Langston was a left-handed pitcher who played in Major League Baseball for 16 seasons. He was known for his impressive fastball and his ability to strike out batters. Langston began his career with the Seattle Mariners in 1984 and quickly established himself as one of the team's top pitchers. He was named to the American League All-Star team in 1987 and 1988.

In 1989, Langston was traded to the Montreal Expos in a blockbuster deal that involved several players. He continued to pitch well for the Expos, earning another All-Star selection in 1991. However, the team struggled to compete in the tough National League East division, and Langston was traded again in 1992, this time to the California Angels.

Langston's time with the Angels was arguably the most successful of his career. He was a key part of the team's pitching staff and helped lead them to the playoffs in 1995. He also earned his fourth All-Star selection that year. Langston remained with the Angels until 1998, when he was traded to the San Diego Padres.

Langston's final season in the majors was in 1999, when he pitched for the Padres and the Cleveland Indians. He retired with a career record of 179-158 and an ERA of 3.97. He also recorded 2,464 strikeouts, which at the time was the second-highest total for a left-handed pitcher in MLB history.

In addition to his success on the field, Langston was also known for his philanthropic work off the field. He was involved in several charitable organizations, including the Make-A-Wish Foundation and the Boys and Girls Clubs of America.

Overall, Mark Langston had a successful career as a pitcher in Major League Baseball. He was a four-time All-Star and one of the top left-handed pitchers of his era. While he never won a World Series championship, he was a valuable contributor to several teams throughout his career.