Jon Lieber vs Jake Peavy: Career Stats Comparison
Jon Lieber (1994–2008) and Jake Peavy (2002–2016) — breaking in during the 1990s and the 2000s respectively, so they pitched against very different hitting environments. Jon Lieber compiled 131 wins and 1,553 strikeouts; Jake Peavy put up 152 wins and 2,207 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Jon Lieber
Jake Peavy
Career Stats Side-by-Side
Every cell below is a career total or career rate. Cells highlighted in green mark the player who leads that line. For pitchers, lower ERA, WHIP, and BB/9 lead; higher K/9 leads.
| Statistic | Jon Lieber | Jake Peavy |
|---|---|---|
| Wins | 131 | 152 |
| Losses | 124 | 126 |
| Games | 401 | 388 |
| Games Started | 327 | 377 |
| Complete Games | 25 | 15 |
| Shutouts | 5 | 6 |
| Saves | 2 | 0 |
| Strikeouts | 1,553 | 2,207 |
| Walks | 422 | 708 |
| Hits Allowed | 2,388 | 2,134 |
| Home Runs Allowed | 285 | 259 |
| Innings Pitched | 2,198 | 2,377 |
| ERA | 4.27 | 3.63 |
| WHIP | 1.28 | 1.20 |
| K/9 | 6.36 | 8.36 |
| BB/9 | 1.73 | 2.68 |
PIV Comparison
By PIV (Player Impact Value), Jake Peavy leads Jon Lieber 34,745 to 27,226 — a gap driven primarily by per-season impact (1,930 vs 1,945 per year). PIV adjusts each season to league baselines, so it's the cleanest way to compare careers across eras.
Peak Seasons
The best single seasons each player produced, ranked by ERA among qualified workloads (120+ innings).
Jon Lieber — top 3 seasons by ERA (lower is better)
Jake Peavy — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Jake Peavy leads in wins, strikeouts, ERA, and WHIP, while Jon Lieber owns no headline categories. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Jake Peavy. PIV agrees: Jake Peavy grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.