Reese Olson vs. Otto Rettig — Career Comparison

Looking at the career totals, Reese Olson and Otto Rettig are fairly close on the surface numbers. Reese Olson posted stronger numbers in ERA (3.6 vs 4.91) and WHIP (1.173 vs 1.636). Otto Rettig had the advantage in home runs allowed (0 per nine innings vs 0.82). By the career numbers, Reese Olson 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.