Roy Halladay vs Zack Wheeler: Career Stats Comparison
Roy Halladay has the better career line of the two, leading 9 of the 12 scored categories on this page (4 further counting totals are shown but not scored). Roy Halladay played 1998–2013 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
Roy Halladay (1998–2013) and Zack Wheeler (2013–present) — breaking in during the 1990s and the 2010s respectively, so they pitched against very different hitting environments. Roy Halladay finished with 203 wins and 2,117 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 Roy Halladay's 3.38.
- Who won more games? Roy Halladay, with 203 to Zack Wheeler's 127.
- Who recorded more strikeouts? Roy Halladay, with 2,117 to Zack Wheeler's 2,013.
- Who had the better WHIP? Zack Wheeler, with 1.13 to Roy Halladay's 1.18.
- Who pitched more innings? Roy Halladay, with 2,749.1 to Zack Wheeler's 1,890.1.
- Who threw more shutouts? Roy Halladay, with 20 to Zack Wheeler's 3.
- Who has the higher career Pitcher PIV? Roy Halladay, with 66,478 career Pitcher PIV to Zack Wheeler's 39,270.
Roy Halladay
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 1990s 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 | Roy Halladay | Zack Wheeler |
|---|---|---|
| Wins | Leads: 203 | 127 |
| Losses not scored | 105 | 80 |
| Games | Leads: 416 | 311 |
| Games Started | Leads: 390 | 311 |
| Complete Games | Leads: 67 | 5 |
| Shutouts | Leads: 20 | 3 |
| Saves | Leads: 1 | 0 |
| Strikeouts | Leads: 2,117 | 2,013 |
| Walks not scored | 592 | 537 |
| Hits Allowed not scored | 2,646 | 1,598 |
| Home Runs Allowed not scored | 236 | 187 |
| Innings Pitched | Leads: 2,749.1 | 1,890.1 |
| ERA | 3.38 | Leads: 3.26 |
| WHIP | 1.18 | Leads: 1.13 |
| K/9 | 6.93 | Leads: 9.58 |
| BB/9 | Leads: 1.94 | 2.56 |
PIV Comparison through 2025
By PIV (Player Impact Value), Roy Halladay outpaces Zack Wheeler 66,478 to 39,270 — driven by both sides of the ledger: 4,155 PIV per season to 3,570, across 16 seasons to 11. 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).
Roy Halladay — 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, Roy Halladay leads in wins, strikeouts, and innings pitched, while Zack Wheeler owns ERA, WHIP, and K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Roy Halladay. PIV agrees: Roy Halladay grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Roy Halladay and Zack Wheeler careers compare
From 2013 through 2013, Roy Halladay and Zack Wheeler were in the majors together. The two careers are close in length, 416 games for Roy Halladay and 311 for Zack Wheeler across 16 and 11 PIV seasons, so the totals compare on fairly even terms. Zack Wheeler's edges on the table are ERA (3.26 to 3.38), WHIP (1.13 to 1.18), and strikeouts per nine (9.58 to 6.93). The per-nine rows read 6.93 strikeouts and 1.94 walks for Roy Halladay, 9.58 and 2.56 for Zack Wheeler. Roy Halladay was mainly a starter (390 starts in 416 games), and Zack Wheeler was mainly a starter (311 starts in 311 games). Zack Wheeler's numbers are live and update with each game, so the comparison is a snapshot.
Roy Halladay vs Zack Wheeler: Frequently Asked Questions
- Who was better, Roy Halladay or Zack Wheeler?
- By the career statistics compared on this page, Roy Halladay leads Zack Wheeler in 9 of the 12 scored categories.
- Who had the better ERA?
- Zack Wheeler, with 3.26 to Roy Halladay's 3.38.
- Who won more games?
- Roy Halladay, with 203 to Zack Wheeler's 127.
- Who recorded more strikeouts?
- Roy Halladay, with 2,117 to Zack Wheeler's 2,013.
- Who had the better WHIP?
- Zack Wheeler, with 1.13 to Roy Halladay's 1.18.