Billy Leo Williams (born June 15, 1938) is a retired American baseball left fielder who played 16 seasons in Major League Baseball (MLB) for the Chicago Cubs and 2 seasons for the Oakland Athletics. Williams was inducted into the National Baseball Hall of Fame in 1987. In 1999, he was named a finalist for the Major League Baseball All-Century Team. Williams was the 1961 National League (NL) Rookie of the Year and was an NL All-Star for six seasons with the Cubs. In 1970, he had a .322 batting average with 42 home runs and 129 runs batted in (RBI), led the NL with 205 hits, and was the NL Most Valuable Player runner-up. In 1972, he won the NL batting title while hitting .333. Williams hit more than 400 home runs in his career, including 30 or more in 5 seasons. He also hit above .300 in five seasons and had over 100 RBI in three seasons. Williams was a highly competitive player on Cubs teams that never reached the postseason. When he finally played in the postseason during the second-to-last year of his career with the Athletics, the A's did not get to the World Series. In 1999, he was selected as a member of the Cubs All-Century Team.