Kenley Jansen vs Mark Melancon: Career Stats Comparison
Kenley Jansen (2010–present) and Mark Melancon (2009–2022) — breaking in during the 2010s and the 2000s respectively, so they pitched against very different hitting environments. Kenley Jansen compiled 54 wins and 1,278 strikeouts; Mark Melancon put up 37 wins and 643 strikeouts. The numbers below run them through identical career and rate-stat lenses.
Kenley Jansen
Mark Melancon
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 | Kenley Jansen | Mark Melancon |
|---|---|---|
| Wins | 54 | 37 |
| Losses | 40 | 40 |
| Games | 933 | 732 |
| Games Started | 0 | 0 |
| Complete Games | 0 | 0 |
| Shutouts | 0 | 0 |
| Saves | 476 | 262 |
| Strikeouts | 1,278 | 643 |
| Walks | 282 | 192 |
| Hits Allowed | 610 | 657 |
| Home Runs Allowed | 88 | 44 |
| Innings Pitched | 927 | 726 |
| ERA | 2.57 | 2.94 |
| WHIP | 0.96 | 1.17 |
| K/9 | 12.40 | 7.96 |
| BB/9 | 2.74 | 2.38 |
PIV Comparison
By PIV (Player Impact Value), Kenley Jansen outpaces Mark Melancon 34,863 to 19,354 — a gap driven primarily by per-season impact (2,179 vs 1,138 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).
Kenley Jansen — top 0 seasons by ERA (lower is better)
Mark Melancon — top 0 seasons by ERA (lower is better)
Verdict
On the head-to-head card, Kenley Jansen leads in wins, strikeouts, ERA, and WHIP, while Mark Melancon owns no headline categories. 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.