Rudy Kallio vs. Andy Sonnanstine — Career Comparison

Looking at the career totals, Rudy Kallio and Andy Sonnanstine are fairly close on the surface numbers. Rudy Kallio posted stronger numbers in ERA (4.17 vs 5.26) and home runs allowed (0 per nine innings vs 1.32). Andy Sonnanstine had the advantage in WHIP (1.414 vs 1.471). By the career numbers, Rudy Kallio 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.