 Breitenstein became part of the pitching rotation in , but had a lackluster season with a 9–19 win–loss record and a 4.69 earned run average.He turned his pitching around after that, and in , his 3.18 ERA was tops in the National League.In , he won 27 games while leading the league in games started, complete games and innings pitched, although he led the league in runs allowed, and had a 4.79 ERA.