Jake O'Brien

"Irish"

4-3

Record

Age / DOB 41
(Sep 25, 1984)

Height 6' 3"

Weight 205 lbs.

Reach 76.0"

Stance Orthodox

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Career Averages

1.31 Sig. Strikes / Min

31.0% Sig. Strike Acc.

1.92 Absorbed / Min

69.0% Strike Defense

6.39 TD Avg / 15 min

54.0% TD Accuracy

25.0% TD Defense

0.2 Sub. / Fight

Win Methods (4)

KO/TKO 1

Submission 0

Decision 3

Loss Methods (3)

KO/TKO 2

Submission 1

Decision 0

Fight History

Result / Opponent

Event & Date

Method/Round

Links

Comments

Loss

vs Jon Jones

UFC 100
Jul 11, 2009

Submission (guillotine choke) R2 2:43

Totals

Fighter	KD	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Sub. Att	Rev.	Ctrl
Jon Jones	0	25 of 87	28%	25 of 87	0 of 0	---	1	0	0:35
Jake O'Brien	0	11 of 68	16%	11 of 68	0 of 4	0%	0	0	0:03

Per Round

Rd	Fighter	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Sub. Att	Ctrl
1	Jon Jones	18 of 54	33%	18 of 54	0 of 0	---	0	0:10
1	Jake O'Brien	8 of 45	17%	8 of 45	0 of 2	0%	0	0:03
2	Jon Jones	7 of 33	21%	7 of 33	0 of 0	---	1	0:25
2	Jake O'Brien	3 of 23	13%	3 of 23	0 of 2	0%	0	0:00

Significant Strikes

Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
Jon Jones	25 of 87	28%	11 of 63	6 of 8	8 of 16	24 of 86	1 of 1	0 of 0
Jake O'Brien	11 of 68	16%	11 of 68	0 of 0	0 of 0	11 of 67	0 of 1	0 of 0

Significant Strikes Per Round

Rd	Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
1	Jon Jones	18 of 54	33%	8 of 39	4 of 4	6 of 11	18 of 54	0 of 0	0 of 0
1	Jake O'Brien	8 of 45	17%	8 of 45	0 of 0	0 of 0	8 of 44	0 of 1	0 of 0
2	Jon Jones	7 of 33	21%	3 of 24	2 of 4	2 of 5	6 of 32	1 of 1	0 of 0
2	Jake O'Brien	3 of 23	13%	3 of 23	0 of 0	0 of 0	3 of 23	0 of 0	0 of 0

Win

vs Christian Wellisch

UFC 94: St-Pierre vs. Penn 2
Jan 31, 2009

Decision (split) (28–29, 29–28, 29–28) R3 5:00

Totals

Fighter	KD	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Sub. Att	Rev.	Ctrl
Jake O'Brien	1	25 of 84	29%	61 of 122	9 of 11	81%	0	0	5:15
Christian Wellisch	0	46 of 179	25%	67 of 200	0 of 1	0%	0	0	0:04

Per Round

Rd	Fighter	KD	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Ctrl
1	Jake O'Brien	1	12 of 28	42%	36 of 54	3 of 3	100%	2:38
1	Christian Wellisch	0	9 of 37	24%	12 of 40	0 of 1	0%	0:00
2	Jake O'Brien	0	6 of 31	19%	18 of 43	2 of 3	66%	1:37
2	Christian Wellisch	0	20 of 62	32%	26 of 68	0 of 0	---	0:00
3	Jake O'Brien	0	7 of 25	28%	7 of 25	4 of 5	80%	1:00
3	Christian Wellisch	0	17 of 80	21%	29 of 92	0 of 0	---	0:04

Significant Strikes

Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
Jake O'Brien	25 of 84	29%	25 of 84	0 of 0	0 of 0	17 of 67	5 of 9	3 of 8
Christian Wellisch	46 of 179	25%	31 of 158	3 of 4	12 of 17	44 of 172	2 of 7	0 of 0

Significant Strikes Per Round

Rd	Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
1	Jake O'Brien	12 of 28	42%	12 of 28	0 of 0	0 of 0	4 of 13	5 of 8	3 of 7
1	Christian Wellisch	9 of 37	24%	6 of 33	1 of 1	2 of 3	8 of 33	1 of 4	0 of 0
2	Jake O'Brien	6 of 31	19%	6 of 31	0 of 0	0 of 0	6 of 29	0 of 1	0 of 1
2	Christian Wellisch	20 of 62	32%	11 of 50	0 of 0	9 of 12	20 of 62	0 of 0	0 of 0
3	Jake O'Brien	7 of 25	28%	7 of 25	0 of 0	0 of 0	7 of 25	0 of 0	0 of 0
3	Christian Wellisch	17 of 80	21%	14 of 75	2 of 3	1 of 2	16 of 77	1 of 3	0 of 0

Loss

vs Cain Velasquez

UFC Fight Night: Silva vs. Irvin
Jul 19, 2008

TKO (punches) R1 2:02

Totals

Fighter	KD	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Sub. Att	Rev.	Ctrl
Cain Velasquez	0	24 of 26	92%	79 of 83	1 of 1	100%	0	0	1:54
Jake O'Brien	0	1 of 1	100%	1 of 1	0 of 0	---	0	0	0:00

Per Round

Rd	Fighter	KD	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Sub. Att	Rev.	Ctrl
1	Cain Velasquez	0	24 of 26	92%	79 of 83	1 of 1	100%	0	0	1:54
1	Jake O'Brien	0	1 of 1	100%	1 of 1	0 of 0	---	0	0	0:00

Significant Strikes

Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
Cain Velasquez	24 of 26	92%	23 of 25	1 of 1	0 of 0	0 of 1	1 of 1	23 of 24
Jake O'Brien	1 of 1	100%	1 of 1	0 of 0	0 of 0	1 of 1	0 of 0	0 of 0

Significant Strikes Per Round

Rd	Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
1	Cain Velasquez	24 of 26	92%	23 of 25	1 of 1	0 of 0	0 of 1	1 of 1	23 of 24
1	Jake O'Brien	1 of 1	100%	1 of 1	0 of 0	0 of 0	1 of 1	0 of 0	0 of 0

Expert Picks (1)

Daniel Vreeland Expert picked Mar 12, 2026 (fight day)

No clear pick

This fight is not discussed in the transcript. No analysis available.

Half the Battle

Loss

vs Andrei Arlovski

UFC 82: Pride of a Champion
Mar 01, 2008

TKO (punches) R2 4:17

Totals

Fighter	KD	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Sub. Att	Rev.	Ctrl
Andrei Arlovski	0	14 of 35	40%	55 of 86	1 of 1	100%	0	0	1:59
Jake O'Brien	0	4 of 12	33%	37 of 52	2 of 14	14%	0	0	4:44

Per Round

Rd	Fighter	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Ctrl
1	Andrei Arlovski	0 of 7	0%	20 of 30	0 of 0	---	0:46
1	Jake O'Brien	1 of 4	25%	27 of 37	1 of 9	11%	3:30
2	Andrei Arlovski	14 of 28	50%	35 of 56	1 of 1	100%	1:13
2	Jake O'Brien	3 of 8	37%	10 of 15	1 of 5	20%	1:14

Significant Strikes

Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
Andrei Arlovski	14 of 35	40%	8 of 27	1 of 3	5 of 5	7 of 21	0 of 1	7 of 13
Jake O'Brien	4 of 12	33%	3 of 11	1 of 1	0 of 0	1 of 8	1 of 2	2 of 2

Significant Strikes Per Round

Rd	Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
1	Andrei Arlovski	0 of 7	0%	0 of 7	0 of 0	0 of 0	0 of 6	0 of 1	0 of 0
1	Jake O'Brien	1 of 4	25%	1 of 4	0 of 0	0 of 0	0 of 2	0 of 1	1 of 1
2	Andrei Arlovski	14 of 28	50%	8 of 20	1 of 3	5 of 5	7 of 15	0 of 0	7 of 13
2	Jake O'Brien	3 of 8	37%	2 of 7	1 of 1	0 of 0	1 of 6	1 of 1	1 of 1

Win

vs Heath Herring

UFC Fight Night: Evans vs. Salmon
Jan 25, 2007

Decision (unanimous) (29–28, 30–27, 30–27) R3 5:00

Totals

Fighter	KD	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Sub. Att	Rev.	Ctrl
Jake O'Brien	0	13 of 41	31%	46 of 76	6 of 8	75%	1	2	9:55
Heath Herring	1	11 of 61	18%	32 of 83	1 of 1	100%	1	0	0:41

Per Round

Rd	Fighter	KD	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Sub. Att	Rev.	Ctrl
1	Jake O'Brien	0	4 of 24	16%	16 of 37	1 of 1	100%	0	1	2:42
1	Heath Herring	1	3 of 22	13%	7 of 26	0 of 0	---	0	0	0:05
2	Jake O'Brien	0	8 of 15	53%	22 of 30	2 of 2	100%	0	1	3:15
2	Heath Herring	0	1 of 22	4%	5 of 27	1 of 1	100%	0	0	0:04
3	Jake O'Brien	0	1 of 2	50%	8 of 9	3 of 5	60%	1	0	3:58
3	Heath Herring	0	7 of 17	41%	20 of 30	0 of 0	---	1	0	0:32

Significant Strikes

Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
Jake O'Brien	13 of 41	31%	12 of 40	1 of 1	0 of 0	2 of 20	0 of 0	11 of 21
Heath Herring	11 of 61	18%	9 of 59	2 of 2	0 of 0	4 of 49	0 of 3	7 of 9

Significant Strikes Per Round

Rd	Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
1	Jake O'Brien	4 of 24	16%	4 of 24	0 of 0	0 of 0	1 of 15	0 of 0	3 of 9
1	Heath Herring	3 of 22	13%	3 of 22	0 of 0	0 of 0	2 of 21	0 of 0	1 of 1
2	Jake O'Brien	8 of 15	53%	8 of 15	0 of 0	0 of 0	1 of 5	0 of 0	7 of 10
2	Heath Herring	1 of 22	4%	0 of 21	1 of 1	0 of 0	1 of 22	0 of 0	0 of 0
3	Jake O'Brien	1 of 2	50%	0 of 1	1 of 1	0 of 0	0 of 0	0 of 0	1 of 2
3	Heath Herring	7 of 17	41%	6 of 16	1 of 1	0 of 0	1 of 6	0 of 3	6 of 8

Win

vs Josh Shockman

UFC 65: Bad Intentions
Nov 18, 2006

Decision (unanimous) (30–27, 30–27, 30–27) R3 5:00

Totals

Fighter	KD	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Sub. Att	Rev.	Ctrl
Jake O'Brien	0	13 of 31	41%	106 of 132	10 of 13	76%	0	0	10:22
Josh Shockman	0	13 of 40	32%	50 of 83	0 of 0	---	0	0	0:26

Per Round

Rd	Fighter	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Ctrl
1	Jake O'Brien	10 of 17	58%	48 of 60	3 of 4	75%	4:12
1	Josh Shockman	3 of 7	42%	22 of 31	0 of 0	---	0:10
2	Jake O'Brien	3 of 8	37%	26 of 31	4 of 6	66%	2:50
2	Josh Shockman	3 of 14	21%	15 of 27	0 of 0	---	0:16
3	Jake O'Brien	0 of 6	0%	32 of 41	3 of 3	100%	3:20
3	Josh Shockman	7 of 19	36%	13 of 25	0 of 0	---	0:00

Significant Strikes

Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
Jake O'Brien	13 of 31	41%	12 of 30	1 of 1	0 of 0	0 of 7	0 of 0	13 of 24
Josh Shockman	13 of 40	32%	1 of 22	2 of 7	10 of 11	13 of 40	0 of 0	0 of 0

Significant Strikes Per Round

Rd	Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
1	Jake O'Brien	10 of 17	58%	9 of 16	1 of 1	0 of 0	0 of 1	0 of 0	10 of 16
1	Josh Shockman	3 of 7	42%	0 of 3	1 of 2	2 of 2	3 of 7	0 of 0	0 of 0
2	Jake O'Brien	3 of 8	37%	3 of 8	0 of 0	0 of 0	0 of 4	0 of 0	3 of 4
2	Josh Shockman	3 of 14	21%	0 of 10	1 of 2	2 of 2	3 of 14	0 of 0	0 of 0
3	Jake O'Brien	0 of 6	0%	0 of 6	0 of 0	0 of 0	0 of 2	0 of 0	0 of 4
3	Josh Shockman	7 of 19	36%	1 of 9	0 of 3	6 of 7	7 of 19	0 of 0	0 of 0

Win

vs Kristof Midoux

UFC Fight Night 6
Aug 17, 2006

TKO (punches) R2 0:52

Totals

Fighter	KD	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Sub. Att	Rev.	Ctrl
Jake O'Brien	0	25 of 52	48%	85 of 116	3 of 3	100%	0	0	4:43
Kristof Midoux	0	2 of 10	20%	2 of 11	0 of 0	---	0	0	0:00

Per Round

Rd	Fighter	Sig. Str.	Sig. Str. %	Total Str.	TD	TD %	Ctrl
1	Jake O'Brien	8 of 20	40%	59 of 75	2 of 2	100%	3:57
1	Kristof Midoux	2 of 10	20%	2 of 10	0 of 0	---	0:00
2	Jake O'Brien	17 of 32	53%	26 of 41	1 of 1	100%	0:46
2	Kristof Midoux	0 of 0	---	0 of 1	0 of 0	---	0:00

Significant Strikes

Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
Jake O'Brien	25 of 52	48%	25 of 52	0 of 0	0 of 0	0 of 3	0 of 0	25 of 49
Kristof Midoux	2 of 10	20%	2 of 10	0 of 0	0 of 0	0 of 8	2 of 2	0 of 0

Significant Strikes Per Round

Rd	Fighter	Sig. Str.	Sig. Str. %	Head	Body	Leg	Distance	Clinch	Ground
1	Jake O'Brien	8 of 20	40%	8 of 20	0 of 0	0 of 0	0 of 3	0 of 0	8 of 17
1	Kristof Midoux	2 of 10	20%	2 of 10	0 of 0	0 of 0	0 of 8	2 of 2	0 of 0
2	Jake O'Brien	17 of 32	53%	17 of 32	0 of 0	0 of 0	0 of 0	0 of 0	17 of 32
2	Kristof Midoux	0 of 0	---	0 of 0	0 of 0	0 of 0	0 of 0	0 of 0	0 of 0