I'm the last one that needs pitching, so I can pick now.
With my offense, I can't believe I'm going to pass up a lock Cy Young winner (1915 Pete Alexander), but that group has nothing else. This is one of those decisions where if I went with the 1915 group, AND I could sneak into the playoffs at 83-79, they would crush it in the playoffs with a 2-man rotation of '15 Pete Alexander and '03 Deacon Phillippe. That being said, we're trying to win 95+ regular season games, so let's go with depth.
1913: New York Giants / Brooklyn Dodgers - Pitching