Corey Kluber vs Jake Peavy: Career Stats Comparison
Corey Kluber has the better career line of the two, leading 7 of the 12 scored categories on this page (4 further counting totals are shown but not scored). Corey Kluber played 2011–2023 as a pitcher; Jake Peavy played 2002–2016 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
Corey Kluber (2011–2023) and Jake Peavy (2002–2016) — breaking in during the 2010s and the 2000s respectively, so they pitched against very different hitting environments. Corey Kluber finished with 116 wins and 1,725 strikeouts; Jake Peavy finished with 152 wins and 2,207 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Corey Kluber, with 3.44 to Jake Peavy's 3.63.
- Who won more games? Jake Peavy, with 152 to Corey Kluber's 116.
- Who recorded more strikeouts? Jake Peavy, with 2,207 to Corey Kluber's 1,725.
- Who had the better WHIP? Corey Kluber, with 1.13 to Jake Peavy's 1.20.
- Who pitched more innings? Jake Peavy, with 2,377.0 to Corey Kluber's 1,641.2.
- Who threw more shutouts? Corey Kluber, with 8 to Jake Peavy's 6.
- Who has the higher career Pitcher PIV? Corey Kluber, with 36,049 career Pitcher PIV to Jake Peavy's 34,745.
Corey Kluber
Jake Peavy
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 2010s and the 2000s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Corey Kluber | Jake Peavy |
|---|---|---|
| Wins | 116 | Leads: 152 |
| Losses not scored | 77 | 126 |
| Games | 271 | Leads: 388 |
| Games Started | 260 | Leads: 377 |
| Complete Games | Leads: 18 | 15 |
| Shutouts | Leads: 8 | 6 |
| Saves | Leads: 1 | 0 |
| Strikeouts | 1,725 | Leads: 2,207 |
| Walks not scored | 368 | 708 |
| Hits Allowed not scored | 1,486 | 2,134 |
| Home Runs Allowed not scored | 177 | 259 |
| Innings Pitched | 1,641.2 | Leads: 2,377.0 |
| ERA | Leads: 3.44 | 3.63 |
| WHIP | Leads: 1.13 | 1.20 |
| K/9 | Leads: 9.46 | 8.36 |
| BB/9 | Leads: 2.02 | 2.68 |
PIV Comparison through 2025
By PIV (Player Impact Value), Corey Kluber edges Jake Peavy 36,049 to 34,745 — driven by per-season impact — 2,773 PIV per season to 1,930 — rather than by longevity, since Corey Kluber played 13 seasons to Jake Peavy'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).
Corey Kluber — top 3 seasons by ERA (lower is better)
Jake Peavy — top 3 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Corey Kluber leads in ERA, WHIP, and K/9, while Jake Peavy owns wins, strikeouts, and innings pitched. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Corey Kluber. PIV agrees: Corey Kluber grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Corey Kluber and Jake Peavy careers compare
Corey Kluber and Jake Peavy were active at the same time between 2011 and 2016. The two careers are close in length, 271 games for Corey Kluber and 388 for Jake Peavy across 13 and 18 PIV seasons, so the totals compare on fairly even terms. By rate, Corey Kluber struck out 9.46 and walked 2.02 per nine innings; Jake Peavy struck out 8.36 and walked 2.68. Both had the same role: Corey Kluber was mainly a starter (260 starts in 271 games); Jake Peavy was mainly a starter (377 starts in 388 games). Corey Kluber allowed fewer baserunners, a 1.13 WHIP to Jake Peavy's 1.20.
Corey Kluber vs Jake Peavy: Frequently Asked Questions
- Who was better, Corey Kluber or Jake Peavy?
- By the career statistics compared on this page, Corey Kluber leads Jake Peavy in 7 of the 12 scored categories.
- Who had the better ERA?
- Corey Kluber, with 3.44 to Jake Peavy's 3.63.
- Who won more games?
- Jake Peavy, with 152 to Corey Kluber's 116.
- Who recorded more strikeouts?
- Jake Peavy, with 2,207 to Corey Kluber's 1,725.
- Who had the better WHIP?
- Corey Kluber, with 1.13 to Jake Peavy's 1.20.