Roy Halladay vs Fernando Valenzuela: Career Stats Comparison
Roy Halladay and Fernando Valenzuela are close to even, splitting the 12 scored categories on this page 6–6 (4 further counting totals are shown but not scored). Roy Halladay played 1998–2013 as a pitcher; Fernando Valenzuela played 1980–1997 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 Fernando Valenzuela (1980–1997) — breaking in during the 1990s and the 1980s respectively, so they pitched against very different hitting environments. Roy Halladay finished with 203 wins and 2,117 strikeouts; Fernando Valenzuela finished with 173 wins and 2,074 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 Fernando Valenzuela's 3.54.
- Who won more games? Roy Halladay, with 203 to Fernando Valenzuela's 173.
- Who recorded more strikeouts? Roy Halladay, with 2,117 to Fernando Valenzuela's 2,074.
- Who had the better WHIP? Roy Halladay, with 1.18 to Fernando Valenzuela's 1.32.
- Who pitched more innings? Fernando Valenzuela, with 2,930.0 to Roy Halladay's 2,749.1.
- Who threw more shutouts? Fernando Valenzuela, with 31 to Roy Halladay's 20.
- Who has the higher career Pitcher PIV? Roy Halladay, with 66,478 career Pitcher PIV to Fernando Valenzuela's 30,102.
Roy Halladay
Fernando Valenzuela
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 1980s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Roy Halladay | Fernando Valenzuela |
|---|---|---|
| Wins | Leads: 203 | 173 |
| Losses not scored | 105 | 153 |
| Games | 416 | Leads: 453 |
| Games Started | 390 | Leads: 424 |
| Complete Games | 67 | Leads: 113 |
| Shutouts | 20 | Leads: 31 |
| Saves | 1 | Leads: 2 |
| Strikeouts | Leads: 2,117 | 2,074 |
| Walks not scored | 592 | 1,151 |
| Hits Allowed not scored | 2,646 | 2,718 |
| Home Runs Allowed not scored | 236 | 226 |
| Innings Pitched | 2,749.1 | Leads: 2,930.0 |
| ERA | Leads: 3.38 | 3.54 |
| WHIP | Leads: 1.18 | 1.32 |
| K/9 | Leads: 6.93 | 6.37 |
| BB/9 | Leads: 1.94 | 3.54 |
PIV Comparison through 2025
By PIV (Player Impact Value), Roy Halladay outpaces Fernando Valenzuela 66,478 to 30,102 — driven by per-season impact — 4,155 PIV per season to 1,672 — rather than by longevity, since Roy Halladay played 16 seasons to Fernando Valenzuela's 18. 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)
Fernando Valenzuela — 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 Fernando Valenzuela owns innings pitched. 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 Fernando Valenzuela careers compare
The two careers never overlapped: Fernando Valenzuela's ended in 1997, and Roy Halladay debuted in 1998. With 416 games against 453 across 16 and 18 PIV seasons, neither player's totals owe much to extra seasons. The per-nine rows read 6.93 strikeouts and 1.94 walks for Roy Halladay, 6.37 and 3.54 for Fernando Valenzuela. Roy Halladay was mainly a starter (390 starts in 416 games), and Fernando Valenzuela was mainly a starter (424 starts in 453 games). Roy Halladay allowed fewer baserunners, a 1.18 WHIP to Fernando Valenzuela's 1.32. Best seasons: 2011 for Roy Halladay (2.35 ERA, 19-6, 220 K in 233 IP) and 1985 for Fernando Valenzuela (2.45 ERA, 17-10, 208 K in 272 IP).
Roy Halladay vs Fernando Valenzuela: Frequently Asked Questions
- Who had the better ERA?
- Roy Halladay, with 3.38 to Fernando Valenzuela's 3.54.
- Who won more games?
- Roy Halladay, with 203 to Fernando Valenzuela's 173.
- Who recorded more strikeouts?
- Roy Halladay, with 2,117 to Fernando Valenzuela's 2,074.
- Who had the better WHIP?
- Roy Halladay, with 1.18 to Fernando Valenzuela's 1.32.