A record that may never be broken: Steve Carlton's 1972 season.
Steve Carlton wins 45.8 percent of the Phils’ 59 wins in 1972. He went 27-10 for a Phillies club that won only 59 games. He led the league in wins, ERA (1.97), strikeouts (310, only the second lefthander ever to reach 300), and complete games, and enjoyed a 15-game winning streak. Of course, he won his first Cy Young Award.
wil.