Herb Pennock vs. Joel Zumaya — Career Comparison

Herb Pennock built a career as a starting pitcher and Joel Zumaya as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Joel Zumaya posted stronger surface numbers — ERA 3.05 and WHIP 1.402 compared to 3.6 and 1.348 for Herb Pennock. By the career numbers, Joel Zumaya had the better of this cross-role comparison — though era context would sharpen the verdict.