George Mack vs. Joakim Soria — Career Comparison

George Mack built a career as a starting pitcher and Joakim Soria as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Joakim Soria posted stronger surface numbers — ERA 3.11 and WHIP 1.156 compared to 7.19 and 1.890 for George Mack. By the career numbers, Joakim Soria had the better of this cross-role comparison — though era context would sharpen the verdict.