Fabio Castillo vs. George Mack — Career Comparison

George Mack built a career as a starting pitcher and Fabio Castillo as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. George Mack posted stronger surface numbers — ERA 7.19 and WHIP 1.890 compared to 13.5 and 3.000 for Fabio Castillo. By the career numbers, George Mack had the better of this cross-role comparison — though era context would sharpen the verdict.