On October 3, 1945, the Detroit Tigers and Cubs met in the World Series for the fourth time. In the opener Borowy pitched a six-hit, 9–0 shutout. He lost the fifth game, and then came back to win the sixth with four scoreless relief innings. Borowy started the final game on one day's rest but gave up hits to the first three batters before leaving. He took the loss and the Tigers won the Series. Before the 2016 World Series, Borowy was the last Chicago Cubs pitcher to win a World Series game.