Dan Haren vs David Wells: Career Stats Comparison
David Wells has the better career line of the two, leading 8 of the 12 scored categories on this page (4 further counting totals are shown but not scored). Dan Haren played 2003–2015 as a pitcher; David Wells played 1987–2007 as a pitcher.
- ERA (Earned Run Average):
- Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
- W (Wins):
- Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
- SO (Strikeouts):
- For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
- WHIP (Walks and Hits per Inning Pitched):
- Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.
Data updated
Dan Haren (2003–2015) and David Wells (1987–2007) — breaking in during the 2000s and the 1980s respectively, so they pitched against very different hitting environments. Dan Haren finished with 153 wins and 2,013 strikeouts; David Wells finished with 239 wins and 2,201 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Dan Haren, with 3.75 to David Wells's 4.13.
- Who won more games? David Wells, with 239 to Dan Haren's 153.
- Who recorded more strikeouts? David Wells, with 2,201 to Dan Haren's 2,013.
- Who had the better WHIP? Dan Haren, with 1.18 to David Wells's 1.27.
- Who pitched more innings? David Wells, with 3,439.0 to Dan Haren's 2,419.2.
- Who threw more shutouts? David Wells, with 12 to Dan Haren's 6.
- Who has the higher career Pitcher PIV? David Wells, with 31,301 career Pitcher PIV to Dan Haren's 24,951.
Dan Haren
David Wells
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. Lower ERA, WHIP and BB/9 lead; higher K/9 leads. 12 of the 16 lines below are scored; the other 4 are counting totals on which fewer is not an achievement, so no one is awarded them. Totals where fewer is not an achievement -- losses, walks and hits allowed -- are left unmarked, because they track how long someone pitched rather than how well. Rate stats are not era-adjusted, and the 2000s and the 1980s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Dan Haren | David Wells |
|---|---|---|
| Wins | 153 | Leads: 239 |
| Losses not scored | 131 | 157 |
| Games | 391 | Leads: 660 |
| Games Started | 380 | Leads: 489 |
| Complete Games | 16 | Leads: 54 |
| Shutouts | 6 | Leads: 12 |
| Saves | 1 | Leads: 13 |
| Strikeouts | 2,013 | Leads: 2,201 |
| Walks not scored | 500 | 719 |
| Hits Allowed not scored | 2,357 | 3,635 |
| Home Runs Allowed not scored | 305 | 407 |
| Innings Pitched | 2,419.2 | Leads: 3,439.0 |
| ERA | Leads: 3.75 | 4.13 |
| WHIP | Leads: 1.18 | 1.27 |
| K/9 | Leads: 7.49 | 5.76 |
| BB/9 | Leads: 1.86 | 1.88 |
PIV Comparison through 2025
By PIV (Player Impact Value), David Wells leads Dan Haren 31,301 to 24,951 — a longevity gap rather than a per-season one: David Wells played 24 seasons to Dan Haren's 15, while Dan Haren carries the higher per-season figure (1,663 to 1,304). PIV adjusts each season to league baselines, so it's the cleanest way to compare careers across eras.
PIV is computed through the 2025 season. The career totals on this page include 2026 to date, so PIV does not yet reflect the 2026 season.
Peak Seasons
The best single seasons each player produced, ranked by ERA among qualified workloads (120+ innings).
Dan Haren — top 3 seasons by ERA (lower is better)
David Wells — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, David Wells leads in wins, strikeouts, and innings pitched, while Dan Haren owns ERA, WHIP, and K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to David Wells. PIV agrees: David Wells grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Dan Haren and David Wells careers compare
From 2003 through 2007, Dan Haren and David Wells were in the majors together. The table compares 391 games of Dan Haren with 660 of David Wells across 15 and 24 PIV seasons; totals favor the longer career by default. Dan Haren's edges on the table are ERA (3.75 to 4.13), WHIP (1.18 to 1.27), and strikeouts per nine (7.49 to 5.76). By rate, Dan Haren struck out 7.49 and walked 1.86 per nine innings; David Wells struck out 5.76 and walked 1.88. Both had the same role: Dan Haren was mainly a starter (380 starts in 391 games); David Wells was mainly a starter (489 starts in 660 games).
Dan Haren vs David Wells: Frequently Asked Questions
- Who was better, Dan Haren or David Wells?
- By the career statistics compared on this page, David Wells leads Dan Haren in 8 of the 12 scored categories.
- Who had the better ERA?
- Dan Haren, with 3.75 to David Wells's 4.13.
- Who won more games?
- David Wells, with 239 to Dan Haren's 153.
- Who recorded more strikeouts?
- David Wells, with 2,201 to Dan Haren's 2,013.
- Who had the better WHIP?
- Dan Haren, with 1.18 to David Wells's 1.27.