Brett Anderson vs. John Purdin — Career Comparison

Brett Anderson built a career as a starting pitcher and John Purdin as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. John Purdin posted stronger surface numbers — ERA 3.9 and WHIP 1.410 compared to 4.07 and 1.345 for Brett Anderson. By the career numbers, John Purdin had the better of this cross-role comparison — though era context would sharpen the verdict.