In 1969, Perry led the league in innings pitched, but the Giants finished second in the pennant race for the fifth straight season. Perry took over as the Giants' ace in 1970, and led the league both in wins (23) and innings pitched (328). Perry's strong 1970 performance salvaged the Giants season, helping them finish above .500 but in third place. In 1971, the Giants finally won their division, with Perry posting a 2.76 ERA. In what would be his only two postseason appearances, Perry won one game and lost the other against the Pittsburgh Pirates.