Harold Hairston vs. Mike Warren — Career Comparison

Looking at the career totals, Harold Hairston and Mike Warren are fairly close on the surface numbers. Harold Hairston posted stronger numbers in WHIP (1.390 vs 1.510) and home runs allowed (0.99 per nine innings vs 1.23). Mike Warren had the advantage in ERA (5.06 vs 6.42). By the career numbers, Harold Hairston 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.