Jose Diaz vs. Fred McKelvin — Career Comparison

Fred McKelvin built a career as a starting pitcher and Jose Diaz as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jose Diaz posted stronger surface numbers — ERA 9.39 and WHIP 2.609 compared to 40.5 and 7.500 for Fred McKelvin. By the career numbers, Jose Diaz had the better of this cross-role comparison — though era context would sharpen the verdict.