Kenley Jansen vs Mariano Rivera: Career Stats Comparison
Mariano Rivera 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). Kenley Jansen has played 2010–present as a pitcher; Mariano Rivera played 1995–2013 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
Kenley Jansen (2010–present) and Mariano Rivera (1995–2013) — breaking in during the 2010s and the 1990s respectively, so they pitched against very different hitting environments. Kenley Jansen has 58 wins and 1,329 strikeouts through October 6, 2026; Mariano Rivera finished with 82 wins and 1,173 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Mariano Rivera, with 2.21 to Kenley Jansen's 2.60.
- Who won more games? Mariano Rivera, with 82 to Kenley Jansen's 58.
- Who recorded more strikeouts? Kenley Jansen, with 1,329 to Mariano Rivera's 1,173.
- Who had the better WHIP? Kenley Jansen, with 0.97 to Mariano Rivera's 1.00.
- Who pitched more innings? Mariano Rivera, with 1,283.2 to Kenley Jansen's 972.1.
- Who threw more shutouts? Neither — both are at 0.
- Who has the higher career Pitcher PIV? Mariano Rivera, with 52,571 career Pitcher PIV to Kenley Jansen's 34,863.
Kenley Jansen
Mariano Rivera
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 1990s were different run environments, so read them against their eras, or use the PIV card below, which is adjusted.
Kenley Jansen is still active — his totals below are current through October 6, 2026.
| Statistic | Kenley Jansen | Mariano Rivera |
|---|---|---|
| Wins | 58 | Leads: 82 |
| Losses not scored | 46 | 60 |
| Games | 983 | Leads: 1,115 |
| Games Started | 0 | Leads: 10 |
| Complete Games | 0 | 0 |
| Shutouts | 0 | 0 |
| Saves | 498 | Leads: 652 |
| Strikeouts | Leads: 1,329 | 1,173 |
| Walks not scored | 305 | 286 |
| Hits Allowed not scored | 634 | 998 |
| Home Runs Allowed not scored | 95 | 71 |
| Innings Pitched | 972.1 | Leads: 1,283.2 |
| ERA | 2.60 | Leads: 2.21 |
| WHIP | Leads: 0.97 | 1.00 |
| K/9 | Leads: 12.30 | 8.22 |
| BB/9 | 2.82 | Leads: 2.01 |
PIV Comparison through 2025
By PIV (Player Impact Value), Mariano Rivera outpaces Kenley Jansen 52,571 to 34,863 — driven by both sides of the ledger: 2,767 PIV per season to 2,179, across 19 seasons to 16. 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).
Kenley Jansen
No seasons meet the qualifying workload, so there is no peak-season list to show.
Mariano Rivera
No seasons meet the qualifying workload, so there is no peak-season list to show.
Verdict
On the head-to-head card, Mariano Rivera leads in wins, ERA, and innings pitched, while Kenley Jansen owns strikeouts, WHIP, and K/9. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Mariano Rivera. PIV agrees: Mariano Rivera grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Kenley Jansen and Mariano Rivera careers compare
From 2010 through 2013, Kenley Jansen and Mariano Rivera were in the majors together. The two careers are close in length, 983 games for Kenley Jansen and 1,115 for Mariano Rivera across 16 and 19 PIV seasons, so the totals compare on fairly even terms. The green cells for Kenley Jansen are strikeouts (1,329 to 1,173), WHIP (0.97 to 1.00), and strikeouts per nine (12.30 to 8.22). By rate, Kenley Jansen struck out 12.30 and walked 2.82 per nine innings; Mariano Rivera struck out 8.22 and walked 2.01. Because Kenley Jansen is still playing, the totals above will keep moving through the season.
Kenley Jansen vs Mariano Rivera: Frequently Asked Questions
- Who was better, Kenley Jansen or Mariano Rivera?
- By the career statistics compared on this page, Mariano Rivera leads Kenley Jansen in 7 of the 12 scored categories.
- Who had the better ERA?
- Mariano Rivera, with 2.21 to Kenley Jansen's 2.60.
- Who won more games?
- Mariano Rivera, with 82 to Kenley Jansen's 58.
- Who recorded more strikeouts?
- Kenley Jansen, with 1,329 to Mariano Rivera's 1,173.
- Who had the better WHIP?
- Kenley Jansen, with 0.97 to Mariano Rivera's 1.00.