Yoslan Herrera vs. Bill Johnson — Career Comparison

On the career pitching numbers, Bill Johnson posted a stronger line than Yoslan Herrera. Bill Johnson posted stronger numbers in ERA (3.57 vs 6.43) and WHIP (1.528 vs 2.314). By the career numbers, Bill Johnson 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.