Frank Bates vs. Miguel Diaz — Career Comparison

Looking at the career totals, Frank Bates and Miguel Diaz are fairly close on the surface numbers. Miguel Diaz posted stronger numbers in ERA (4.81 vs 6.33) and WHIP (1.374 vs 2.082). Frank Bates had the advantage in home runs allowed (0.28 per nine innings vs 1.55). By the career numbers, Miguel Diaz had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.