era also had a lasting impact on pitchers. Between 1910 and 1920, the last decade of the dead-ball era, eight pitchers had 30-win seasons. Since the beginning of the 1921 season, the first full season of the live-ball era, only three pitchers have had 30-win seasons: Lefty Grove in 1931; Dizzy Dean in 1934; and Denny McLain in 1968. Notes References Stewart, Gail. "1930s Timelines." CrestWood House New York, 1989. Stewart, Gail. "1920s Timelines." CrestWood House New York, 1989. Baseball genres History of Major League Baseball