Bob Knepper was a left-handed pitcher who played for three different teams during his 15-year career in Major League Baseball. He was known for his control and ability to induce ground balls, which made him a valuable asset to any team he played for.

Knepper began his career with the San Francisco Giants in 1976, where he spent the first six seasons of his career. He quickly established himself as a reliable starter, earning a spot in the starting rotation in his second season with the team. He had a breakout year in 1978, finishing with a 17-11 record and a 2.88 ERA, which earned him his first All-Star selection.

In 1982, Knepper was traded to the Houston Astros, where he spent the next eight seasons of his career. He continued to be a consistent performer for the Astros, earning another All-Star selection in 1988. He was also a key member of the Astros' pitching staff during their playoff runs in 1986 and 1987.

Knepper finished his career with the Texas Rangers, where he spent his final season in 1990. He retired with a career record of 146-155 and a 3.81 ERA. He also had 1,287 strikeouts and 1,023 walks in 2,435 innings pitched.

Off the field, Knepper was known for his outspokenness and his willingness to speak his mind on a variety of issues. He was a vocal advocate for the environment and was involved in several environmental causes throughout his career. He was also a strong supporter of the Major League Baseball Players Association and was involved in several labor disputes during his career.

Overall, Bob Knepper was a reliable and consistent performer during his 15-year career in Major League Baseball. He was known for his control and ability to induce ground balls, which made him a valuable asset to any team he played for. He was also a vocal advocate for environmental causes and was involved in several labor disputes during his career.