Rollie Fingers vs Kenley Jansen: Career Stats Comparison
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 compiled 114 wins and 1,299 strikeouts; Kenley Jansen put up 54 wins and 1,278 strikeouts. The numbers below run them through identical career and rate-stat lenses.
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. For pitchers, lower ERA, WHIP, and BB/9 lead; higher K/9 leads.
| Statistic | Rollie Fingers | Kenley Jansen |
|---|---|---|
| Wins | 114 | 54 |
| Losses | 118 | 40 |
| Games | 944 | 933 |
| Games Started | 37 | 0 |
| Complete Games | 4 | 0 |
| Shutouts | 2 | 0 |
| Saves | 341 | 476 |
| Strikeouts | 1,299 | 1,278 |
| Walks | 492 | 282 |
| Hits Allowed | 1,474 | 610 |
| Home Runs Allowed | 123 | 88 |
| Innings Pitched | 1,701 | 927 |
| ERA | 2.90 | 2.57 |
| WHIP | 1.16 | 0.96 |
| K/9 | 6.87 | 12.40 |
| BB/9 | 2.60 | 2.74 |
PIV Comparison
By PIV (Player Impact Value), Kenley Jansen edges Rollie Fingers 34,863 to 33,082 — a gap driven primarily by per-season impact (2,179 vs 1,946 per year). PIV adjusts each season to league baselines, so it's the cleanest way to compare careers across eras.
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 — top 0 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Kenley Jansen leads in ERA, WHIP, and K/9, while Rollie Fingers owns wins, strikeouts, 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.