Kenley Jansen
KJ
Kenley
Jansen
#74
6′5″ 39 yrs CW
49 Games Played
2.84
ERA
#169
51
Strikeouts
#303
3
Wins
#221
0.97
WHIP
#85
44.1
Innings
#355
L
3
BB
21
H
22
HR
6
Career Statistics
Pitching
| Season | G | IP | W | L | ERA | WHIP | SO | BB | H | HR |
|---|---|---|---|---|---|---|---|---|---|---|
| MLB 2024 | 54 | 54.2 | 4 | 2 | 3.29 | 1.02 | 62 | 18 | 38 | 4 |
| MLB 2025 | 60 | 59.0 | 5 | 3 | 2.29 | 0.88 | 57 | 16 | 36 | 7 |
| MLB 2026 | 49 | 44.1 | 3 | 3 | 2.84 | 0.97 | 51 | 21 | 22 | 6 |
| World Baseball Classic 2026* | 1 | 1.0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 |
| Career* | 164 | 159.0 | 12 | 8 | 2.77 | 0.96 | 171 | 56 | 96 | 17 |
| MLB Spring Training 2026* | 3 | 3.0 | 0 | 0 | 0 | 0.67 | 4 | 1 | 1 | 0 |
* Not split by stage - all games included.
Game Log
IP: Innings Pitched · H: Hits Allowed · R: Runs · ER: Earned Runs · BB: Walks · K: Strikeouts · HR: Home Runs · PC-ST: Pitches-Strikes · W/L: Win/Loss Decision
Splits
Pitching
| Split | G | IP | W | L | ERA | WHIP | SO | BB | H | HR |
|---|---|---|---|---|---|---|---|---|---|---|
| Home | 27 | 25.0 | 2 | 1 | 1.8 | 0.96 | 21 | 13 | 11 | 1 |
| Away | 22 | 19.1 | 1 | 2 | 4.19 | 0.98 | 30 | 8 | 11 | 5 |
vs. Opponents
| OPP | W-L | G | IP | W | L | ERA | WHIP | SO | BB | H | HR |
|---|---|---|---|---|---|---|---|---|---|---|---|
| CLEGuardians | 2-4 | 6 | 6.2 | 0 | 0 | 1.35 | 0.60 | 5 | 3 | 1 | 0 |
| KCRoyals | 4-0 | 4 | 4.0 | 0 | 0 | 0.00 | 0.50 | 4 | 0 | 2 | 0 |
| TORBlue Jays | 2-1 | 3 | 3.0 | 1 | 0 | 0.00 | 0.33 | 4 | 1 | 0 | 0 |
| PITPirates | 2-1 | 3 | 2.2 | 0 | 1 | 6.75 | 0.75 | 5 | 0 | 2 | 2 |
| CWSWhite Sox | 3-0 | 3 | 3.0 | 0 | 0 | 0.00 | 0.67 | 2 | 1 | 1 | 0 |
| BOSRed Sox | 1-1 | 2 | 1.2 | 0 | 0 | 0.00 | 1.20 | 1 | 1 | 1 | 0 |
| COLRockies | 2-0 | 2 | 1.1 | 0 | 0 | 0.00 | 0.00 | 3 | 0 | 0 | 0 |
| MINTwins | 2-0 | 2 | 1.1 | 0 | 0 | 0.00 | 2.25 | 1 | 2 | 1 | 0 |
| LAAAngels | 1-1 | 2 | 1.2 | 0 | 0 | 0.00 | 1.20 | 2 | 2 | 0 | 0 |
| BALOrioles | 0-2 | 2 | 2.0 | 0 | 1 | 13.50 | 2.00 | 1 | 3 | 1 | 1 |
| TEXRangers | 1-1 | 2 | 1.1 | 0 | 0 | 0.00 | 0.75 | 0 | 1 | 0 | 0 |
| OAKAthletics | 2-0 | 2 | 2.0 | 0 | 0 | 4.50 | 2.00 | 3 | 1 | 3 | 0 |
| HOUAstros | 0-2 | 2 | 2.1 | 0 | 1 | 15.43 | 2.14 | 1 | 1 | 4 | 1 |
| CHCCubs | 2-0 | 2 | 1.2 | 0 | 0 | 0.00 | 1.80 | 3 | 2 | 1 | 0 |
| ARIDiamondbacks | 0-1 | 1 | 0.1 | 0 | 0 | 27.00 | 3.00 | 1 | 0 | 1 | 1 |
| NYMMets | 0-1 | 1 | 1.0 | 0 | 0 | 0.00 | 0.00 | 3 | 0 | 0 | 0 |
| PHIPhillies | 0-1 | 1 | 1.0 | 0 | 0 | 0.00 | 1.00 | 1 | 0 | 1 | 0 |
| SFGiants | 1-0 | 1 | 1.0 | 1 | 0 | 0.00 | 0.00 | 3 | 0 | 0 | 0 |
| STLCardinals | 1-0 | 1 | 0.1 | 0 | 0 | 0.00 | 3.00 | 1 | 1 | 0 | 0 |
| TBRays | 1-0 | 1 | 1.0 | 0 | 0 | 0.00 | 0.00 | 1 | 0 | 0 | 0 |
| MIAMarlins | 1-0 | 1 | 1.0 | 0 | 0 | 0.00 | 0.00 | 1 | 0 | 0 | 0 |
| LADDodgers | 1-0 | 1 | 0.1 | 1 | 0 | 0.00 | 0.00 | 0 | 0 | 0 | 0 |
| WSHNationals | 0-1 | 1 | 1.0 | 0 | 0 | 0.00 | 0.00 | 0 | 0 | 0 | 0 |
| SDPadres | 1-0 | 1 | 1.0 | 0 | 0 | 0.00 | 0.00 | 3 | 0 | 0 | 0 |
| MILBrewers | 1-0 | 1 | 1.0 | 0 | 0 | 0.00 | 3.00 | 1 | 2 | 1 | 0 |
| CINReds | 0-1 | 1 | 0.2 | 0 | 0 | 27.00 | 3.00 | 1 | 0 | 2 | 1 |
