Rollie Fingers vs Kenley Jansen: Career Stats Comparison
Rollie Fingers and Kenley Jansen are close to even, splitting the 12 scored categories on this page 6–6 (4 further counting totals are shown but not scored). Rollie Fingers played 1968–1985 as a pitcher; Kenley Jansen has played 2010–present 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
Rollie Fingers (1968–1985) and Kenley Jansen (2010–present) — breaking in during the 1960s and the 2010s respectively, so they pitched against very different hitting environments. Rollie Fingers finished with 114 wins and 1,299 strikeouts; Kenley Jansen has 58 wins and 1,329 strikeouts through October 6, 2026. The numbers below run them through identical career and rate-stat lenses.
Quick answer
- Who had the better ERA? Kenley Jansen, with 2.60 to Rollie Fingers's 2.90.
- Who won more games? Rollie Fingers, with 114 to Kenley Jansen's 58.
- Who recorded more strikeouts? Kenley Jansen, with 1,329 to Rollie Fingers's 1,299.
- Who had the better WHIP? Kenley Jansen, with 0.97 to Rollie Fingers's 1.16.
- Who pitched more innings? Rollie Fingers, with 1,701.1 to Kenley Jansen's 972.1.
- Who threw more shutouts? Rollie Fingers, with 2 to Kenley Jansen's 0.
- Who has the higher career Pitcher PIV? Kenley Jansen, with 34,863 career Pitcher PIV to Rollie Fingers's 33,082.
Rollie Fingers
Kenley Jansen
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 1960s and the 2010s 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 | Rollie Fingers | Kenley Jansen |
|---|---|---|
| Wins | Leads: 114 | 58 |
| Losses not scored | 118 | 46 |
| Games | 944 | Leads: 983 |
| Games Started | Leads: 37 | 0 |
| Complete Games | Leads: 4 | 0 |
| Shutouts | Leads: 2 | 0 |
| Saves | 341 | Leads: 498 |
| Strikeouts | 1,299 | Leads: 1,329 |
| Walks not scored | 492 | 305 |
| Hits Allowed not scored | 1,474 | 634 |
| Home Runs Allowed not scored | 123 | 95 |
| Innings Pitched | Leads: 1,701.1 | 972.1 |
| ERA | 2.90 | Leads: 2.60 |
| WHIP | 1.16 | Leads: 0.97 |
| K/9 | 6.87 | Leads: 12.30 |
| BB/9 | Leads: 2.60 | 2.82 |
PIV Comparison through 2025
By PIV (Player Impact Value), Kenley Jansen edges Rollie Fingers 34,863 to 33,082 — driven by per-season impact — 2,179 PIV per season to 1,946 — rather than by longevity, since Kenley Jansen played 16 seasons to Rollie Fingers's 17. 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).
Rollie Fingers — top 3 seasons by ERA (lower is better)
Kenley Jansen
No seasons meet the qualifying workload, so there is no peak-season list to show.
Verdict
On the head-to-head card, Kenley Jansen leads in strikeouts, ERA, WHIP, and K/9, while Rollie Fingers owns wins and innings pitched. That doesn't settle the era debate, but on the raw scoreboard the edge goes to Kenley Jansen. PIV agrees: Kenley Jansen grades out higher across their careers. Click through to each profile for the full season-by-season breakdown.
Related Matchups
How the Rollie Fingers and Kenley Jansen careers compare
Rollie Fingers (1968–1985) was finished before Kenley Jansen (2010–present) arrived, so they never shared a league. The two careers are close in length, 944 games for Rollie Fingers and 983 for Kenley Jansen across 17 and 16 PIV seasons, so the totals compare on fairly even terms. By rate, Rollie Fingers struck out 6.87 and walked 2.60 per nine innings; Kenley Jansen struck out 12.30 and walked 2.82. Both had the same role: Rollie Fingers worked mostly in relief (37 starts in 944 games, 341 saves); Kenley Jansen worked mostly in relief (0 starts in 983 games, 498 saves). In WHIP, Kenley Jansen's 0.97 beats Rollie Fingers's 1.16. Kenley Jansen's numbers are live and update with each game, so the comparison is a snapshot.
Rollie Fingers vs Kenley Jansen: Frequently Asked Questions
- Who had the better ERA?
- Kenley Jansen, with 2.60 to Rollie Fingers's 2.90.
- Who won more games?
- Rollie Fingers, with 114 to Kenley Jansen's 58.
- Who recorded more strikeouts?
- Kenley Jansen, with 1,329 to Rollie Fingers's 1,299.
- Who had the better WHIP?
- Kenley Jansen, with 0.97 to Rollie Fingers's 1.16.