José Parra vs. Willis Roberts — Career Comparison

José Parra built a career as a starting pitcher and Willis Roberts as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. José Parra posted stronger surface numbers — ERA 2.73 and WHIP 1.182 compared to 4.64 and 1.521 for Willis Roberts. By the career numbers, José Parra had the better of this cross-role comparison — though era context would sharpen the verdict.