Roy Oswalt is 40-14 in his career after the All-Star break, good for one of the best winning percentages in the season’s second half since the start of divisional play.

Highest Career Win Pct. Post All-Star Break, Since 1969
(Min. 50 Decisions)

W-L Pct.
Don Gullett 46-16 .742
Roy Oswalt 40-14 .741
Tim Hudson 55-22 .714
Andy Pettitte 90-37 .709
John Tudor 70-30 .700