Mike Mussina vs Jake Peavy: Career Stats Comparison
Mike Mussina 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). Mike Mussina played 1991–2008 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
Mike Mussina (1991–2008) and Jake Peavy (2002–2016) — breaking in during the 1990s and the 2000s respectively, so they pitched against very different hitting environments. Mike Mussina finished with 270 wins and 2,813 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? Jake Peavy, with 3.63 to Mike Mussina's 3.68.
- Who won more games? Mike Mussina, with 270 to Jake Peavy's 152.
- Who recorded more strikeouts? Mike Mussina, with 2,813 to Jake Peavy's 2,207.
- Who had the better WHIP? Mike Mussina, with 1.19 to Jake Peavy's 1.20.
- Who pitched more innings? Mike Mussina, with 3,562.2 to Jake Peavy's 2,377.0.
- Who threw more shutouts? Mike Mussina, with 23 to Jake Peavy's 6.
- Who has the higher career Pitcher PIV? Mike Mussina, with 76,572 career Pitcher PIV to Jake Peavy's 34,745.
Mike Mussina
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 1990s and the 2000s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
| Statistic | Mike Mussina | Jake Peavy |
|---|---|---|
| Wins | Leads: 270 | 152 |
| Losses not scored | 153 | 126 |
| Games | Leads: 537 | 388 |
| Games Started | Leads: 536 | 377 |
| Complete Games | Leads: 57 | 15 |
| Shutouts | Leads: 23 | 6 |
| Saves | 0 | 0 |
| Strikeouts | Leads: 2,813 | 2,207 |
| Walks not scored | 785 | 708 |
| Hits Allowed not scored | 3,460 | 2,134 |
| Home Runs Allowed not scored | 376 | 259 |
| Innings Pitched | Leads: 3,562.2 | 2,377.0 |
| ERA | 3.68 | Leads: 3.63 |
| WHIP | Leads: 1.19 | 1.20 |
| K/9 | 7.11 | Leads: 8.36 |
| BB/9 | Leads: 1.98 | 2.68 |
PIV Comparison through 2025
By PIV (Player Impact Value), Mike Mussina outpaces Jake Peavy 76,572 to 34,745 — driven by per-season impact — 4,254 PIV per season to 1,930 — rather than by longevity, since Mike Mussina played 18 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).
Mike Mussina — 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, Mike Mussina leads in wins, strikeouts, WHIP, and innings pitched, while Jake Peavy owns ERA and K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Mike Mussina. PIV agrees: Mike Mussina grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Mike Mussina and Jake Peavy careers compare
From 2002 through 2008, Mike Mussina and Jake Peavy were in the majors together. The two careers are close in length, 537 games for Mike Mussina and 388 for Jake Peavy across 18 and 18 PIV seasons, so the totals compare on fairly even terms. Jake Peavy's edges on the table are ERA (3.63 to 3.68) and strikeouts per nine (8.36 to 7.11). The per-nine rows read 7.11 strikeouts and 1.98 walks for Mike Mussina, 8.36 and 2.68 for Jake Peavy. Both had the same role: Mike Mussina was mainly a starter (536 starts in 537 games); Jake Peavy was mainly a starter (377 starts in 388 games).
Mike Mussina vs Jake Peavy: Frequently Asked Questions
- Who was better, Mike Mussina or Jake Peavy?
- By the career statistics compared on this page, Mike Mussina leads Jake Peavy in 9 of the 12 scored categories.
- Who had the better ERA?
- Jake Peavy, with 3.63 to Mike Mussina's 3.68.
- Who won more games?
- Mike Mussina, with 270 to Jake Peavy's 152.
- Who recorded more strikeouts?
- Mike Mussina, with 2,813 to Jake Peavy's 2,207.
- Who had the better WHIP?
- Mike Mussina, with 1.19 to Jake Peavy's 1.20.