Jack Armstrong vs. Johnny Hetki — Career Comparison

Jack Armstrong built a career as a starting pitcher and Johnny Hetki as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Johnny Hetki posted stronger surface numbers — ERA 4.39 and WHIP 1.412 compared to 4.58 and 1.458 for Jack Armstrong. By the career numbers, Johnny Hetki had the better of this cross-role comparison — though era context would sharpen the verdict.