Tommy Hanson vs. Bob Osborn — Career Comparison

Looking at the career totals, Tommy Hanson and Bob Osborn are fairly close on the surface numbers. Tommy Hanson posted stronger numbers in ERA (3.8 vs 4.32) and WHIP (1.304 vs 1.588). Bob Osborn had the advantage in home runs allowed (0.34 per nine innings vs 0.99). By the career numbers, Tommy Hanson 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.