Brian Fisher vs. Zack Spencer — Career Comparison

Looking at the career totals, Brian Fisher and Zack Spencer are fairly close on the surface numbers. Brian Fisher posted stronger numbers in ERA (4.39 vs 7.04) and WHIP (1.423 vs 1.565). Zack Spencer had the advantage in home runs allowed (0 per nine innings vs 0.98). By the career numbers, Brian Fisher 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.