Jon Lieber vs Roy Oswalt: Career Stats Comparison
Jon Lieber (1994–2008) and Roy Oswalt (2001–2013) — 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; Roy Oswalt put up 163 wins and 1,852 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Jon Lieber
Roy Oswalt
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 | Roy Oswalt |
|---|---|---|
| Wins | 131 | 163 |
| Losses | 124 | 102 |
| Games | 401 | 365 |
| Games Started | 327 | 341 |
| Complete Games | 25 | 20 |
| Shutouts | 5 | 8 |
| Saves | 2 | 0 |
| Strikeouts | 1,553 | 1,852 |
| Walks | 422 | 520 |
| Hits Allowed | 2,388 | 2,199 |
| Home Runs Allowed | 285 | 197 |
| Innings Pitched | 2,198 | 2,245 |
| ERA | 4.27 | 3.36 |
| WHIP | 1.28 | 1.21 |
| K/9 | 6.36 | 7.42 |
| BB/9 | 1.73 | 2.08 |
PIV Comparison
By PIV (Player Impact Value), Roy Oswalt outpaces Jon Lieber 55,095 to 27,226 — a gap driven primarily by per-season impact (3,935 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)
Roy Oswalt — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Roy Oswalt 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 Roy Oswalt. PIV agrees: Roy Oswalt grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.