John Campbell vs. Junior Guerra — Career Comparison

Junior Guerra built a career as a starting pitcher and John Campbell as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. John Campbell posted stronger surface numbers — ERA 0 and WHIP 2.000 compared to 4.06 and 1.362 for Junior Guerra. By the career numbers, John Campbell had the better of this cross-role comparison — though era context would sharpen the verdict.