Billy Leo Williams (born June 15, 1938) is a retired American baseball left fielder who played sixteen seasons in Major League Baseball (MLB) for the Chicago Cubs and two 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 one of the best Cubs players. He was the 1961 National League (NL) Rookie of the Year and was an NL All-Star for six seasons with the Cubs.