John Firth vs. Erwin Renfer — Career Comparison

Erwin Renfer built a career as a starting pitcher and John Firth as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Erwin Renfer posted stronger surface numbers — ERA 6 and WHIP 1.333 compared to 8 and 2.111 for John Firth. By the career numbers, Erwin Renfer had the better of this cross-role comparison — though era context would sharpen the verdict.