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, his longest tenure was 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. His 41.5 career wins above replacement is the highest of any Mexican-born MLB player. Valenzuela had an unorthodox windup and was 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.

The Los Angeles Dodgers are an American professional baseball team based in Los Angeles. The Dodgers compete in Major League Baseball (MLB) as a member club of the National League (NL) West Division. Established in 1883 in the city of Brooklyn, which in 1898 became a borough of New York City, the team joined the NL in 1890 as the Brooklyn Bridegrooms and assumed several other monikers before finally settling on the name Dodgers in 1932. From the 1940s through the mid-1950s, the Dodgers developed a fierce crosstown rivalry with the New York Yankees as the two clubs faced each other in the World Series seven times, with the Dodgers losing the first five matchups before defeating them to win the franchise's first title in 1955. It was also during this period that the Dodgers made history by breaking the baseball color line in 1947 with the debut of Jackie Robinson, the first African American to play in the Major Leagues since 1884. Another major milestone was reached in 1956 when Don Newcombe became the first player ever to win both the Cy Young Award and the NL MVP in the same season.