Dan Haren vs Zack Wheeler: Career Stats Comparison
Dan Haren 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; Zack Wheeler has played 2013–present 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 Zack Wheeler (2013–present) — breaking in during the 2000s and the 2010s respectively, so they pitched against very different hitting environments. Dan Haren finished with 153 wins and 2,013 strikeouts; Zack Wheeler has 127 wins and 2,013 strikeouts through October 12, 2026. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Zack Wheeler, with 3.26 to Dan Haren's 3.75.
- Who won more games? Dan Haren, with 153 to Zack Wheeler's 127.
- Who recorded more strikeouts? Neither — both are at 2,013.
- Who had the better WHIP? Zack Wheeler, with 1.13 to Dan Haren's 1.18.
- Who pitched more innings? Dan Haren, with 2,419.2 to Zack Wheeler's 1,890.1.
- Who threw more shutouts? Dan Haren, with 6 to Zack Wheeler's 3.
- Who has the higher career Pitcher PIV? Zack Wheeler, with 39,270 career Pitcher PIV to Dan Haren's 24,951.
Dan Haren
Zack Wheeler
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 2010s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
Zack Wheeler is still active — his totals below are current through October 12, 2026.
| Statistic | Dan Haren | Zack Wheeler |
|---|---|---|
| Wins | Leads: 153 | 127 |
| Losses not scored | 131 | 80 |
| Games | Leads: 391 | 311 |
| Games Started | Leads: 380 | 311 |
| Complete Games | Leads: 16 | 5 |
| Shutouts | Leads: 6 | 3 |
| Saves | Leads: 1 | 0 |
| Strikeouts | 2,013 | 2,013 |
| Walks not scored | 500 | 537 |
| Hits Allowed not scored | 2,357 | 1,598 |
| Home Runs Allowed not scored | 305 | 187 |
| Innings Pitched | Leads: 2,419.2 | 1,890.1 |
| ERA | 3.75 | Leads: 3.26 |
| WHIP | 1.18 | Leads: 1.13 |
| K/9 | 7.49 | Leads: 9.58 |
| BB/9 | Leads: 1.86 | 2.56 |
PIV Comparison through 2025
By PIV (Player Impact Value), Zack Wheeler outpaces Dan Haren 39,270 to 24,951 — driven by per-season impact — 3,570 PIV per season to 1,663 — rather than by longevity, since Zack Wheeler played 11 seasons to Dan Haren's 15. 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)
Zack Wheeler — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Zack Wheeler leads in ERA, WHIP, and K/9, while Dan Haren owns wins and innings pitched. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Zack Wheeler. PIV agrees: Zack Wheeler 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 Zack Wheeler careers compare
From 2013 through 2015, Dan Haren and Zack Wheeler were in the majors together. With 391 games against 311 across 15 and 11 PIV seasons, neither player's totals owe much to extra seasons. Where Zack Wheeler comes out ahead, it is in ERA (3.26 to 3.75), WHIP (1.13 to 1.18), and strikeouts per nine (9.58 to 7.49). By rate, Dan Haren struck out 7.49 and walked 1.86 per nine innings; Zack Wheeler struck out 9.58 and walked 2.56. Dan Haren was mainly a starter (380 starts in 391 games), and Zack Wheeler was mainly a starter (311 starts in 311 games). Zack Wheeler allowed fewer baserunners, a 1.13 WHIP to Dan Haren's 1.18. Zack Wheeler's numbers are live and update with each game, so the comparison is a snapshot.
Dan Haren vs Zack Wheeler: Frequently Asked Questions
- Who was better, Dan Haren or Zack Wheeler?
- By the career statistics compared on this page, Dan Haren leads Zack Wheeler in 8 of the 12 scored categories.
- Who had the better ERA?
- Zack Wheeler, with 3.26 to Dan Haren's 3.75.
- Who won more games?
- Dan Haren, with 153 to Zack Wheeler's 127.
- Who recorded more strikeouts?
- Neither — both are at 2,013.
- Who had the better WHIP?
- Zack Wheeler, with 1.13 to Dan Haren's 1.18.