Felix Hernandez vs Sandy Koufax: Career Stats Comparison
Felix Hernandez and Sandy Koufax are close to even, splitting the 12 scored categories on this page 6–6 (4 further counting totals are shown but not scored). Felix Hernandez played 2005–2019 as a pitcher; Sandy Koufax played 1955–1966 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
Felix Hernandez (2005–2019) and Sandy Koufax (1955–1966) — breaking in during the 2000s and the 1950s respectively, so they pitched against very different hitting environments. Felix Hernandez finished with 169 wins and 2,524 strikeouts; Sandy Koufax finished with 165 wins and 2,396 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Sandy Koufax, with 2.76 to Felix Hernandez's 3.42.
- Who won more games? Felix Hernandez, with 169 to Sandy Koufax's 165.
- Who recorded more strikeouts? Felix Hernandez, with 2,524 to Sandy Koufax's 2,396.
- Who had the better WHIP? Sandy Koufax, with 1.11 to Felix Hernandez's 1.21.
- Who pitched more innings? Felix Hernandez, with 2,729.2 to Sandy Koufax's 2,324.1.
- Who threw more shutouts? Sandy Koufax, with 40 to Felix Hernandez's 11.
- Who has the higher career Pitcher PIV? Sandy Koufax, with 63,020 career Pitcher PIV to Felix Hernandez's 44,530.
Felix Hernandez
Sandy Koufax
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 1950s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Felix Hernandez | Sandy Koufax |
|---|---|---|
| Wins | Leads: 169 | 165 |
| Losses not scored | 136 | 87 |
| Games | Leads: 419 | 397 |
| Games Started | Leads: 418 | 314 |
| Complete Games | 25 | Leads: 137 |
| Shutouts | 11 | Leads: 40 |
| Saves | 0 | Leads: 9 |
| Strikeouts | Leads: 2,524 | 2,396 |
| Walks not scored | 805 | 817 |
| Hits Allowed not scored | 2,487 | 1,754 |
| Home Runs Allowed not scored | 264 | 204 |
| Innings Pitched | Leads: 2,729.2 | 2,324.1 |
| ERA | 3.42 | Leads: 2.76 |
| WHIP | 1.21 | Leads: 1.11 |
| K/9 | 8.32 | Leads: 9.28 |
| BB/9 | Leads: 2.65 | 3.16 |
PIV Comparison through 2025
By PIV (Player Impact Value), Sandy Koufax outpaces Felix Hernandez 63,020 to 44,530 — driven by per-season impact — 5,252 PIV per season to 2,969 — rather than by longevity, since Sandy Koufax played 12 seasons to Felix Hernandez'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).
Felix Hernandez — top 3 seasons by ERA (lower is better)
Sandy Koufax — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Sandy Koufax leads in ERA, WHIP, and K/9, while Felix Hernandez owns wins, strikeouts, and innings pitched. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Sandy Koufax. PIV agrees: Sandy Koufax grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Felix Hernandez and Sandy Koufax careers compare
Sandy Koufax (1955–1966) was finished before Felix Hernandez (2005–2019) arrived, so they never shared a league. The two careers are close in length, 419 games for Felix Hernandez and 397 for Sandy Koufax across 15 and 12 PIV seasons, so the totals compare on fairly even terms. The per-nine rows read 8.32 strikeouts and 2.65 walks for Felix Hernandez, 9.28 and 3.16 for Sandy Koufax. Felix Hernandez was mainly a starter (418 starts in 419 games), and Sandy Koufax was mainly a starter (314 starts in 397 games). Complete games (25 to 137) show how differently the two eras used starters. Sandy Koufax allowed fewer baserunners, a 1.11 WHIP to Felix Hernandez's 1.21.
Felix Hernandez vs Sandy Koufax: Frequently Asked Questions
- Who had the better ERA?
- Sandy Koufax, with 2.76 to Felix Hernandez's 3.42.
- Who won more games?
- Felix Hernandez, with 169 to Sandy Koufax's 165.
- Who recorded more strikeouts?
- Felix Hernandez, with 2,524 to Sandy Koufax's 2,396.
- Who had the better WHIP?
- Sandy Koufax, with 1.11 to Felix Hernandez's 1.21.