Robert Wesley Knepper (born May 25, 1954) is an American former Major League Baseball pitcher. From 1976 to 1990, he pitched 15 seasons for the San Francisco Giants and Houston Astros, earning two All-Star appearances as well as the 1981 NL Comeback Player of the Year award. He generated controversy with his 1988 remarks about female umpire Pam Postema and the National Organization for Women.