John Callahan vs. Steve Kline — Career Comparison

Steve Kline built a career as a starting pitcher and John Callahan as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Steve Kline posted stronger surface numbers — ERA 3.26 and WHIP 1.221 compared to 16.2 and 3.000 for John Callahan. By the career numbers, Steve Kline had the better of this cross-role comparison — though era context would sharpen the verdict.