Greg Holland vs Kenley Jansen: Career Stats Comparison
Kenley Jansen 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). Greg Holland played 2010–2022 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
Greg Holland (2010–2022) and Kenley Jansen (2010–present) — both came up during the 2010s, so the matchup is a direct one. Greg Holland finished with 30 wins and 677 strikeouts; Kenley Jansen has 58 wins and 1,329 strikeouts through October 12, 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 Greg Holland's 3.14.
- Who won more games? Kenley Jansen, with 58 to Greg Holland's 30.
- Who recorded more strikeouts? Kenley Jansen, with 1,329 to Greg Holland's 677.
- Who had the better WHIP? Kenley Jansen, with 0.97 to Greg Holland's 1.20.
- Who pitched more innings? Kenley Jansen, with 972.1 to Greg Holland's 547.2.
- Who threw more shutouts? Neither — both are at 0.
- Who has the higher career Pitcher PIV? Kenley Jansen, with 34,863 career Pitcher PIV to Greg Holland's 15,332.
Greg Holland
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, so read them against the run environment each player worked in, or use the PIV card below, which is adjusted.
Kenley Jansen is still active — his totals below are current through October 12, 2026.
| Statistic | Greg Holland | Kenley Jansen |
|---|---|---|
| Wins | 30 | Leads: 58 |
| Losses not scored | 28 | 46 |
| Games | 556 | Leads: 983 |
| Games Started | 0 | 0 |
| Complete Games | 0 | 0 |
| Shutouts | 0 | 0 |
| Saves | 220 | Leads: 498 |
| Strikeouts | 677 | Leads: 1,329 |
| Walks not scored | 241 | 305 |
| Hits Allowed not scored | 417 | 634 |
| Home Runs Allowed not scored | 43 | 95 |
| Innings Pitched | 547.2 | Leads: 972.1 |
| ERA | 3.14 | Leads: 2.60 |
| WHIP | 1.20 | Leads: 0.97 |
| K/9 | 11.13 | Leads: 12.30 |
| BB/9 | 3.96 | Leads: 2.82 |
PIV Comparison through 2025
By PIV (Player Impact Value), Kenley Jansen outpaces Greg Holland 34,863 to 15,332 — driven by both sides of the ledger: 2,179 PIV per season to 1,179, across 16 seasons to 13. 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).
Greg Holland
No seasons meet the qualifying workload, so there is no peak-season list to show.
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 wins, strikeouts, ERA, and WHIP, while Greg Holland 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.
Related Matchups
How the Greg Holland and Kenley Jansen careers compare
The careers of Greg Holland (2010–2022) and Kenley Jansen (2010–present) overlapped from 2010 to 2022, so for those seasons they faced the same league conditions. The table compares 556 games of Greg Holland with 983 of Kenley Jansen across 13 and 16 PIV seasons; totals favor the longer career by default. Kenley Jansen leads every scored row of the table. The per-nine rows read 11.13 strikeouts and 3.96 walks for Greg Holland, 12.30 and 2.82 for Kenley Jansen. Greg Holland worked mostly in relief (0 starts in 556 games, 220 saves), and Kenley Jansen worked mostly in relief (0 starts in 983 games, 498 saves). Kenley Jansen's numbers are live and update with each game, so the comparison is a snapshot.
Greg Holland vs Kenley Jansen: Frequently Asked Questions
- Who was better, Greg Holland or Kenley Jansen?
- By the career statistics compared on this page, Kenley Jansen leads Greg Holland in 9 of the 12 scored categories.
- Who had the better ERA?
- Kenley Jansen, with 2.60 to Greg Holland's 3.14.
- Who won more games?
- Kenley Jansen, with 58 to Greg Holland's 30.
- Who recorded more strikeouts?
- Kenley Jansen, with 1,329 to Greg Holland's 677.
- Who had the better WHIP?
- Kenley Jansen, with 0.97 to Greg Holland's 1.20.