Frank Arellanes vs. Jose Diaz — Career Comparison

Frank Arellanes 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. Frank Arellanes posted stronger surface numbers — ERA 2.28 and WHIP 1.081 compared to 9.39 and 2.609 for Jose Diaz. By the career numbers, Frank Arellanes had the better of this cross-role comparison — though era context would sharpen the verdict.