David Aardsma vs. Sam Frock — Career Comparison

Sam Frock built a career as a starting pitcher and David Aardsma as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Sam Frock posted stronger surface numbers — ERA 3.23 and WHIP 1.344 compared to 4.27 and 1.487 for David Aardsma. By the career numbers, Sam Frock had the better of this cross-role comparison — though era context would sharpen the verdict.