Complex sentence: The following year he was 14-5, and in 1939 he was 3-0 in 11 relief appearances; though the Yankees won the World Series in each of those years, Chandler did not appear in the postseason.
Split into simpler sentences: The following year he was 14-5, and in 1939 he was 3-0 in 11 relief appearances. Although the Yankees won the World Series in each of those years, Chandler did not appear in the postseason.