Patrick Sandoval vs. Mitch Spence — Career Comparison

On the career pitching numbers, Patrick Sandoval posted a stronger line than Mitch Spence. Patrick Sandoval posted stronger numbers in ERA (4.01 vs 4.77) and home runs allowed (0.92 per nine innings vs 1.37). By the career numbers, Patrick Sandoval 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.