Rogelio Armenteros vs. Mike Caldwell — Career Comparison

Looking at the career totals, Rogelio Armenteros and Mike Caldwell are fairly close on the surface numbers. Rogelio Armenteros posted stronger numbers in WHIP (1.222 vs 1.345) and home runs allowed (0.5 per nine innings vs 0.81). Mike Caldwell had the advantage in ERA (3.81 vs 4). By the career numbers, Rogelio Armenteros 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.