On February 11 1977 The Chicago Cubs trade two-time National League batting champion Bill Madlock and infielder Rob Sperring to the San Francisco Giants for outfielder Bobby Murcer, third baseman Steve Ontiveros, and a minor league pitcher. In 1976, Madlock led the NL with a .339 mark, while Murcer hit 23 home runs and 90 RBI. Madlock leaves Chicago having hit .336 for them, which ties him with Riggs Stephenson for the top career average in team history.
During the 1979 season, San Francisco will trade the fiercely competitive ‘Mad Dog’ to the Pirates, where he will play a major role in the team’s world championship that season and will win two more batting crowns during his seven-year tenure in Pittsburgh.