Troy Mattes vs. Andy O'Connor — Career Comparison

Looking at the career totals, Troy Mattes and Andy O'Connor are fairly close on the surface numbers. Troy Mattes posted stronger numbers in ERA (6 vs 10.13) and WHIP (1.644 vs 2.750). Andy O'Connor had the advantage in home runs allowed (0 per nine innings vs 1.8). By the career numbers, Troy Mattes 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.