Jack Leiper vs. Dale Roberts — Career Comparison

Looking at the career totals, Jack Leiper and Dale Roberts are fairly close on the surface numbers. Jack Leiper posted stronger numbers in ERA (5.4 vs 9) and WHIP (1.778 vs 3.000). Dale Roberts had the advantage in home runs allowed (0 per nine innings vs 0.6). By the career numbers, Jack Leiper 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.