John Shaffer vs. Ron Willis — Career Comparison

Looking at the career totals, John Shaffer and Ron Willis are fairly close on the surface numbers. John Shaffer posted stronger numbers in WHIP (1.492 vs 1.544) and home runs allowed (0.15 per nine innings vs 0.57). Ron Willis had the advantage in ERA (3.32 vs 4.57). By the career numbers, John Shaffer 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.