Tommy Doyle vs. Martin Perez — Career Comparison

Martin Perez built a career as a starting pitcher and Tommy Doyle as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Martin Perez posted stronger surface numbers — ERA 4.41 and WHIP 1.441 compared to 8.31 and 1.769 for Tommy Doyle. By the career numbers, Martin Perez had the better of this cross-role comparison — though era context would sharpen the verdict.