Jimmy Barthmaier vs. John Mackinson — Career Comparison

Jimmy Barthmaier built a career as a starting pitcher and John Mackinson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. John Mackinson posted stronger surface numbers — ERA 7.36 and WHIP 1.773 compared to 10.45 and 2.323 for Jimmy Barthmaier. By the career numbers, John Mackinson had the better of this cross-role comparison — though era context would sharpen the verdict.