Jose Alvarez vs. Paul Castner — Career Comparison

Looking at the career totals, Jose Alvarez and Paul Castner are fairly close on the surface numbers. Jose Alvarez posted stronger numbers in ERA (2.99 vs 6.3) and WHIP (1.441 vs 1.900). Paul Castner had the advantage in home runs allowed (0 per nine innings vs 0.67). By the career numbers, Jose Alvarez 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.