Kenley Jansen

Position: Pitcher

Bats: Both • Throws: Right

6-5, 265lb (196cm, 120kg)

Team: Boston Red Sox (majors)

Born: September 30, 1987 in Willemstad, Curacao cw

Debut: July 24, 2010 (Age 22-297d, 19,786th in major league history)
vs. NYM 1.0 IP, 0 H, 2 SO, 0 BB, 0 ER

Rookie Status: Exceeded rookie limits during 2011 season

2024 Contract Status: Signed thru 2024, 2 yrs/$32M (23-24)

Service Time (01/2024): 13.073 • Free Agent: 2025

Agents: Wasserman

Full Name: Kenley Geronimo Jansen

Nicknames: Kenleyfornia or Ma'montro

Pronunciation: \KEHN-lee JAN-sin\

Twitter: @kenleyjansen74

Instagram: @kenleyjansen74

View Player Info from the B-R Bullpen

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SUMMARY

2024

Career

WAR

1.3

21.9

ERA

3.29

2.57

871

447

54.2

868.1

1221

WHIP

1.061

0.963

Fielding stats are given overall and by position. In some cases, they will be identical.

2023 Fielding Game Log (overall)

2023 Fielding Game Log (overall)
Rk	Gtm	Date	Tm		Opp	Rslt	Inngs	BF	Inn	PO	A	E	Ch	DP	Pos
1	2 (1)	Apr 1	BOS		BAL	W,9-8	GF	5	1.0	0	0	0	0	0
2	7 (4)	Apr 6	BOS	@	DET	W,6-3	GF	3	1.0	0	0	0	0	0
3	9 (1)	Apr 9	BOS	@	DET	W,4-1	GF	6	1.0	0	0	0	0	0
4	14 (4)	Apr 14	BOS		LAA	W,5-3	GF	4	1.0	0	0	0	0	0
5	15	Apr 15	BOS		LAA	W,9-7	GF	3	1.0	0	0	0	0	0
6	18 (2)	Apr 18	BOS		MIN	W,5-4		3	1.0	0	0	0	0	0
7	21 (2)	Apr 21	BOS	@	MIL	W,5-3	GF	3	1.0	0	0	0	0	0
8	25 (3)	Apr 25	BOS	@	BAL	W,8-6	GF	2	0.2	0	0	0	0	0
9	28 (2)	Apr 29	BOS		CLE	W,8-7		6	1.0	0	0	0	0	0
May			Tm		Opp	Rslt	Inngs	BF	Inn	PO	A	E	Ch	DP	Pos
10	34 (5)	May 5	BOS	@	PHI	W,5-3	GF	5	1.0	0	0	0	0	0
11	35	May 6	BOS	@	PHI	W,7-4	GF	4	1.0	0	0	0	0	0
12	38 (2)	May 10	BOS	@	ATL	W,5-2	GF	4	1.0	0	0	0	0	0
13	39	May 12	BOS		STL	L,6-8		4	0.0	0	0	0	0	0
14	40	May 13	BOS		STL	L,3-4	GF	7	1.0	0	0	0	0	0
15	46 (5)	May 20	BOS	@	SDP	W,4-2	GF	5	1.0	0	0	0	0	0
16	50 (3)	May 24	BOS	@	LAA	L,3-7	GF	4	1.0	0	0	0	0	0
17	52 (1)	May 27	BOS	@	ARI	W,2-1	GF	3	1.0	0	0	0	0	0
Jun			Tm		Opp	Rslt	Inngs	BF	Inn	PO	A	E	Ch	DP	Pos
18	56 (3)	Jun 1	BOS		CIN	W,8-2	GF	4	1.0	0	0	0	0	0
19	57	Jun 3 (1)	BOS		TBR	W,8-5	GF	4	1.0	0	0	0	0	0
20	58	Jun 3 (2)	BOS		TBR	L,2-4	GF	7	1.0	0	0	0	0	0
21	61 (2)	Jun 6	BOS	@	CLE	W,5-4	GF	3	1.0	0	0	0	0	0
22	64 (2)	Jun 9	BOS	@	NYY	W,3-2	GF	5	1.0	0	0	0	0	0
23	66 (1)	Jun 11	BOS	@	NYY	W,3-2		3	1.0	0	1	0	1	0
24	67	Jun 12	BOS		COL	L,3-4		3	1.0	0	0	0	0	0
25	72 (4)	Jun 18 (2)	BOS		NYY	W,4-1	GF	4	1.0	0	0	0	0	0
26	75 (2)	Jun 21	BOS	@	MIN	L,4-5		3	1.0	0	1	0	1	0
27	77 (1)	Jun 23	BOS	@	CHW	W,3-1	GF	3	1.0	0	0	0	0	0
28	78	Jun 24	BOS	@	CHW	L,4-5	GF	4	0.2	1	0	0	1	0
29	82 (3)	Jun 29	BOS		MIA	L,0-2	GF	5	1.0	0	0	0	0	0
Jul			Tm		Opp	Rslt	Inngs	BF	Inn	PO	A	E	Ch	DP	Pos
30	84 (1)	Jul 1	BOS	@	TOR	W,7-6	GF	6	1.1	0	0	0	0	0
31	87 (2)	Jul 5	BOS		TEX	W,4-2	GF	3	1.0	0	0	0	0	0
32	91 (3)	Jul 9	BOS		OAK	W,4-3	GF	3	1.0	0	0	0	0	0
33	92	Jul 14	BOS	@	CHC	W,8-3	GF	1	0.1	0	0	0	0	0
34	97 (4)	Jul 19	BOS	@	OAK	L,5-6	GF	4	1.0	0	0	0	0	0
35	99 (1)	Jul 22	BOS		NYM	W,8-6	GF	2	0.1	0	0	0	0	0
36	102 (2)	Jul 26	BOS		ATL	W,5-3	GF	4	1.0	0	0	0	0	0
37	103	Jul 28	BOS	@	SFG	W,3-2	GF	3	1.0	0	0	0	0	0
38	104	Jul 29	BOS	@	SFG	L,2-3	GF	1	0.0	0	0	0	0	0
Aug			Tm		Opp	Rslt	Inngs	BF	Inn	PO	A	E	Ch	DP	Pos
39	107 (2)	Aug 1	BOS	@	SEA	W,6-4	GF	3	1.0	0	0	0	0	0
40	112 (4)	Aug 7	BOS		KCR	W,6-2	GF	3	1.0	0	0	0	0	0
41	114 (1)	Aug 9	BOS		KCR	W,4-3	GF	4	1.0	0	0	0	0	0
42	115	Aug 10	BOS		KCR	W,2-0	GF	3	1.0	0	0	0	0	0
43	118 (2)	Aug 13	BOS		DET	W,6-3	GF	4	1.0	0	0	0	0	0
44	119	Aug 15	BOS	@	WSN	W,5-4	GF	3	1.0	0	0	0	0	0
45	124 (4)	Aug 20	BOS	@	NYY	W,6-5	GF	5	1.0	0	0	0	0	0
46	127 (2)	Aug 23	BOS	@	HOU	W,7-5		1	0.1	0	0	0	0	0
47	134 (6)	Aug 30	BOS		HOU	L,4-7		3	1.0	0	1	0	1	0
September			Tm		Opp	Rslt	Inngs	BF	Inn	PO	A	E	Ch	DP	Pos
48	137 (2)	Sep 3	BOS	@	KCR	W,7-3	GF	6	1.0	0	0	0	0	0
49	138	Sep 4	BOS	@	TBR	W,7-3	GF	3	1.0	0	0	0	0	0
50	139	Sep 5	BOS	@	TBR	L,6-8	GF	2	0.0	0	0	0	0	0
51	145 (5)	Sep 12 (2)	BOS		NYY	L,1-4		2	0.0	0	0	0	0	0
							51gm		44.2	1	3	0	4	0