Roy Halladay vs Carlos Zambrano: Career Stats Comparison
Roy Halladay has the better career line of the two, leading 11 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; Carlos Zambrano played 2001–2012 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 Carlos Zambrano (2001–2012) — breaking in during the 1990s and the 2000s respectively, so they pitched against very different hitting environments. Roy Halladay finished with 203 wins and 2,117 strikeouts; Carlos Zambrano finished with 132 wins and 1,637 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Roy Halladay, with 3.38 to Carlos Zambrano's 3.66.
- Who won more games? Roy Halladay, with 203 to Carlos Zambrano's 132.
- Who recorded more strikeouts? Roy Halladay, with 2,117 to Carlos Zambrano's 1,637.
- Who had the better WHIP? Roy Halladay, with 1.18 to Carlos Zambrano's 1.33.
- Who pitched more innings? Roy Halladay, with 2,749.1 to Carlos Zambrano's 1,959.0.
- Who threw more shutouts? Roy Halladay, with 20 to Carlos Zambrano's 5.
- Who has the higher career Pitcher PIV? Roy Halladay, with 66,478 career Pitcher PIV to Carlos Zambrano's 16,362.
Roy Halladay
Carlos Zambrano
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 2000s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Roy Halladay | Carlos Zambrano |
|---|---|---|
| Wins | Leads: 203 | 132 |
| Losses not scored | 105 | 91 |
| Games | Leads: 416 | 354 |
| Games Started | Leads: 390 | 302 |
| Complete Games | Leads: 67 | 10 |
| Shutouts | Leads: 20 | 5 |
| Saves | Leads: 1 | 0 |
| Strikeouts | Leads: 2,117 | 1,637 |
| Walks not scored | 592 | 898 |
| Hits Allowed not scored | 2,646 | 1,709 |
| Home Runs Allowed not scored | 236 | 161 |
| Innings Pitched | Leads: 2,749.1 | 1,959.0 |
| ERA | Leads: 3.38 | 3.66 |
| WHIP | Leads: 1.18 | 1.33 |
| K/9 | 6.93 | Leads: 7.52 |
| BB/9 | Leads: 1.94 | 4.13 |
PIV Comparison through 2025
By PIV (Player Impact Value), Roy Halladay outpaces Carlos Zambrano 66,478 to 16,362 — driven by both sides of the ledger: 4,155 PIV per season to 1,364, across 16 seasons to 12. 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)
Carlos Zambrano — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Roy Halladay leads in wins, strikeouts, ERA, and WHIP, while Carlos Zambrano owns 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 Carlos Zambrano careers compare
From 2001 through 2012, Roy Halladay and Carlos Zambrano were in the majors together. The two careers are close in length, 416 games for Roy Halladay and 354 for Carlos Zambrano across 16 and 12 PIV seasons, so the totals compare on fairly even terms. Where Carlos Zambrano comes out ahead, it is in strikeouts per nine (7.52 to 6.93). The per-nine rows read 6.93 strikeouts and 1.94 walks for Roy Halladay, 7.52 and 4.13 for Carlos Zambrano. Roy Halladay was mainly a starter (390 starts in 416 games), and Carlos Zambrano was mainly a starter (302 starts in 354 games).
Roy Halladay vs Carlos Zambrano: Frequently Asked Questions
- Who was better, Roy Halladay or Carlos Zambrano?
- By the career statistics compared on this page, Roy Halladay leads Carlos Zambrano in 11 of the 12 scored categories.
- Who had the better ERA?
- Roy Halladay, with 3.38 to Carlos Zambrano's 3.66.
- Who won more games?
- Roy Halladay, with 203 to Carlos Zambrano's 132.
- Who recorded more strikeouts?
- Roy Halladay, with 2,117 to Carlos Zambrano's 1,637.
- Who had the better WHIP?
- Roy Halladay, with 1.18 to Carlos Zambrano's 1.33.