Roberto Duran vs. David Manning — Career Comparison

David Manning built a career as a starting pitcher and Roberto Duran as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Roberto Duran posted stronger surface numbers — ERA 6.58 and WHIP 1.846 compared to 16.2 and 2.850 for David Manning. By the career numbers, Roberto Duran had the better of this cross-role comparison — though era context would sharpen the verdict.