Jack Armstrong vs. Wilson Heredia — Career Comparison

Jack Armstrong built a career as a starting pitcher and Wilson Heredia as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Wilson Heredia posted stronger surface numbers — ERA 3.41 and WHIP 1.768 compared to 4.58 and 1.458 for Jack Armstrong. By the career numbers, Wilson Heredia had the better of this cross-role comparison — though era context would sharpen the verdict.