Frank Hafner vs. Matt Williams — Career Comparison

Matt Williams built a career as a starting pitcher and Frank Hafner as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Matt Williams posted stronger surface numbers — ERA 5.29 and WHIP 1.471 compared to 7 and 2.222 for Frank Hafner. By the career numbers, Matt Williams had the better of this cross-role comparison — though era context would sharpen the verdict.