Tim Birtsas vs. Alberto Castillo — Career Comparison

Looking at the career totals, Tim Birtsas and Alberto Castillo are fairly close on the surface numbers. Tim Birtsas had the edge in ERA (4.08 vs 4.33). By the career numbers, Tim Birtsas 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.