Rich Robertson vs. Frank Shellenback — Career Comparison

On the career pitching numbers, Frank Shellenback posted a stronger line than Rich Robertson. Frank Shellenback posted stronger numbers in ERA (3.06 vs 5.4) and WHIP (1.424 vs 1.700). By the career numbers, Frank Shellenback 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.