John Halla vs. Rodrigo Lopez — Career Comparison

Rodrigo Lopez built a career as a starting pitcher and John Halla as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. John Halla posted stronger surface numbers — ERA 2.84 and WHIP 0.947 compared to 4.82 and 1.442 for Rodrigo Lopez. By the career numbers, John Halla had the better of this cross-role comparison — though era context would sharpen the verdict.