Juan Abreu vs. Tim Birtsas — Career Comparison

Looking at the career totals, Juan Abreu and Tim Birtsas are fairly close on the surface numbers. Juan Abreu posted stronger numbers in ERA (2.7 vs 4.08) and WHIP (1.350 vs 1.564). Tim Birtsas had the advantage in home runs allowed (1.01 per nine innings vs 1.35). By the career numbers, Juan Abreu 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.