Fernando Valenzuela Anguamea is a Mexican former professional baseball pitcher. Valenzuela played 17 Major League Baseball (MLB) seasons, from 1980 to 1991 and 1993 to 1997. While he played for six MLB teams, he is best remembered for his time with the Los Angeles Dodgers. Valenzuela batted and threw left-handed. His career highlights include a win-loss record of 173–153, with an earned run average (ERA) of 3.54. Valenzuela was notable for his unorthodox windup and for being one of a small number of pitchers who threw a screwball regularly. Never a particularly hard thrower, the Dodgers felt he needed another pitch; he was taught the screwball in 1979 by teammate Bobby Castillo.