Bob Blewett vs. Billy Petrick — Career Comparison

Looking at the career totals, Bob Blewett and Billy Petrick are fairly close on the surface numbers. Bob Blewett posted stronger numbers in ERA (4.82 vs 7.45) and home runs allowed (0 per nine innings vs 2.79). Billy Petrick had the advantage in WHIP (1.552 vs 1.643). By the career numbers, Bob Blewett 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.