Hank Borowy, who pitched just three and a half seasons for the Cubs and just one that was any good, is nevertheless a significant figure in franchise history.
Why? After he was acquired from the Yankees July 27, 1945, he went 11-2 in 15 appearances (14 starts) with a 2.13 ERA and 1.243 WHIP. The Cubs were in first place at the time of this acquisition, but it’s widely thought that they wouldn’t have hung on and won the N.L. pennant without him.
Which is all well and good, but Borowy was not quite as good in 1946 and then markedly worse in 1947 and 1948.