Johnny Marcum vs. Zac Rosscup — Career Comparison

Johnny Marcum built a career as a starting pitcher and Zac Rosscup as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Johnny Marcum posted stronger surface numbers — ERA 4.66 and WHIP 1.467 compared to 5.09 and 1.673 for Zac Rosscup. By the career numbers, Johnny Marcum had the better of this cross-role comparison — though era context would sharpen the verdict.