Coombs' best season was , which is still one of the best single pitching seasons in MLB history. Besides his record of 31–9, he led the American League in wins (31), games played (45), and shutouts (13), which is still the single season AL record. He won 18 of 19 starts that July and racked up 53 consecutive scoreless innings, which stood as the major league record until Walter Johnson broke it three years later. Don Drysdale and Orel Hershiser have since surpassed Johnson's mark.