 They went on to defeat the Brooklyn Dodgers in the 1947 World Series, but Gumpert did not appear in the Fall Classic.He was exclusively a relief pitcher for the Yankees in the early months of , posting a 2.88 ERA in 15 games and 25 innings pitched, but his contract was sold to the second-division White Sox on July 25.He finished the 1948 season in Chicago's starting rotation, and held his spot in the Pale Hose rotation in as well.