Jack Flaherty vs. John Mackinson — Career Comparison

Jack Flaherty 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. Jack Flaherty posted stronger surface numbers — ERA 3.8 and WHIP 1.208 compared to 7.36 and 1.773 for John Mackinson. By the career numbers, Jack Flaherty had the better of this cross-role comparison — though era context would sharpen the verdict.