John Campbell vs. Troy Mattes — Career Comparison

Troy Mattes 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 6 and 1.644 for Troy Mattes. By the career numbers, John Campbell had the better of this cross-role comparison — though era context would sharpen the verdict.