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Brian Kelleher "Boom"

Active #54 bantamweight · age 39 · Switch · 5'6" 168 cm · 145 lb 66 kg · reach 66" 168 cm
At a glance
  • 4-fight losing streak — needs a turnaround
  • 63% of wins by KO or submission
  • 38% of wins finished in round 1
  • UFC veteran since 2017
Elo rating
1451
Global Elo 1499 ±37
Rank
#54
top 67% of division
UFC record
8-9-0
KO 2 · Sub 3 · Dec 3
Streak
-4
Δ90d +6 · Δ1y +6
Last fight
Jul 20, 2024
Loss by Submission · R1
Career at a glance
Octagon time
2h 14m
Avg fight time
7:52
Bonuses
5
Fights per year
2.4
Ground control
34m
Since last fight
1y 11mo

Honest Elo history

17 fights · tap & drag
Jun 3, 2017 — W vs Iuri Alcantara Δ+41Jul 22, 2017 — L vs Marlon Vera Δ-33Oct 21, 2017 — W vs Damian Stasiak Δ+33Feb 24, 2018 — W vs Renan Barao Δ+35May 12, 2018 — L vs John Lineker Δ-26Dec 29, 2018 — L vs Montel Jackson Δ-22Jan 18, 2020 — W vs Ode Osbourne Δ+17May 13, 2020 — W vs Hunter Azure Δ+18Jun 6, 2020 — L vs Cody Stamann Δ-14Sep 5, 2020 — W vs Ray Rodriguez Δ+16Feb 13, 2021 — L vs Ricky Simon Δ-16Aug 21, 2021 — W vs Domingo Pilarte Δ+12Jan 15, 2022 — W vs Kevin Croom Δ+12Mar 5, 2022 — L vs Umar Nurmagomedov Δ-20Jun 25, 2022 — L vs Mario Bautista Δ-19Dec 16, 2023 — L vs Cody Garbrandt Δ-15Jul 20, 2024 — L vs Cody Gibson Δ-24 1425145014751500152515501575 201920212023 [{"i":0,"x":90,"y":252.6,"elo":1499,"date":"2017-06-03","opp":"Iuri Alcantara","result":"W","delta":41},{"i":1,"x":103.5,"y":324,"elo":1465,"date":"2017-07-22","opp":"Marlon Vera","result":"L","delta":-33},{"i":2,"x":128.7,"y":253,"elo":1499,"date":"2017-10-21","opp":"Damian Stasiak","result":"W","delta":33},{"i":3,"x":163.5,"y":177.9,"elo":1534,"date":"2018-02-24","opp":"Renan Barao","result":"W","delta":35},{"i":4,"x":184.8,"y":233.8,"elo":1508,"date":"2018-05-12","opp":"John Lineker","result":"L","delta":-26},{"i":5,"x":248.7,"y":281.6,"elo":1485,"date":"2018-12-29","opp":"Montel Jackson","result":"L","delta":-22},{"i":6,"x":355.2,"y":245.3,"elo":1502,"date":"2020-01-18","opp":"Ode Osbourne","result":"W","delta":17},{"i":7,"x":387.2,"y":207.5,"elo":1520,"date":"2020-05-13","opp":"Hunter Azure","result":"W","delta":18},{"i":8,"x":393.9,"y":238.7,"elo":1505,"date":"2020-06-06","opp":"Cody Stamann","result":"L","delta":-14},{"i":9,"x":419,"y":204.8,"elo":1521,"date":"2020-09-05","opp":"Ray Rodriguez","result":"W","delta":16},{"i":10,"x":463.5,"y":238.7,"elo":1505,"date":"2021-02-13","opp":"Ricky Simon","result":"L","delta":-16},{"i":11,"x":515.8,"y":212,"elo":1518,"date":"2021-08-21","opp":"Domingo Pilarte","result":"W","delta":12},{"i":12,"x":556.5,"y":186.2,"elo":1530,"date":"2022-01-15","opp":"Kevin Croom","result":"W","delta":12},{"i":13,"x":570,"y":229.7,"elo":1509,"date":"2022-03-05","opp":"Umar Nurmagomedov","result":"L","delta":-20},{"i":14,"x":601,"y":271.5,"elo":1490,"date":"2022-06-25","opp":"Mario Bautista","result":"L","delta":-19},{"i":15,"x":750,"y":302.7,"elo":1475,"date":"2023-12-16","opp":"Cody Garbrandt","result":"L","delta":-15},{"i":16,"x":810,"y":353.9,"elo":1451,"date":"2024-07-20","opp":"Cody Gibson","result":"L","delta":-24}]

Last fights

Elo-based expectation · not betting advice
Date Opponent Result Δ Elo
Jul 20, 2024 Cody Gibson L -24
Dec 16, 2023 Cody Garbrandt L -15
Jun 25, 2022 Mario Bautista L -19
Mar 5, 2022 Umar Nurmagomedov L -20
Jan 15, 2022 Kevin Croom W +12

Performance

SLpM Significant Strikes Landed per Minute. Higher = busier striker.
Strikes Landed
L1L3L5
Str Acc Striking accuracy: significant strikes landed / attempted. Higher = more efficient striker.
Strike Accuracy
L1L3L5
SApM Significant Strikes Absorbed per Minute. How often opponents land on this fighter. Lower is better.
Strikes Absorbed
L1L3L5
Str Def Share of opponent’s significant strike attempts that miss or are blocked. Higher is better.
Striking Defense
L1L3L5
TD / 15 min Takedowns landed per 15 minutes (one full 3-round fight). Measures wrestling output.
Takedowns
L1L3L5
TD Acc Takedowns landed / attempted. Higher = cleaner entries.
Takedown Accuracy
L1L3L5
TD Def Share of opponent takedown attempts stuffed. Higher = harder to put on the mat.
Takedown Defense
L1L3L5
Sub / 15 min Submission attempts per 15 minutes. Counts attempts, not just finishes — a proxy for grappling aggression.
Submission Attempts
L1L3L5
Ctrl / 15 min Control time in seconds per 15 minutes. Time in dominant grappling positions. 240 = 4 min, the realistic high-end across divisions.
Control Time (sec)
L1L3L5
KD / 15 min Knockdowns landed per 15 minutes. Counts every flash KD even if the fight continued — measures stopping power across all rounds, not just finishes.
Knockdowns
L1L3L5
Above division avg (intensity ∝ how far)
Near avg (±10%)
Below division avg

Finishes

How wins come Finish rate = (KO + Submission wins) / total UFC wins. Measures how often this fighter closes the show before the scorecards.
63%
5 / 8
Finish rate
KO
2
25% of wins
SUB
3
38% of wins
DEC
3
38% of wins
KO: 2 (25%) 2 Sub: 3 (38%) 3 Dec: 3 (38%) 3
Finishes by round
5 total
R1
3 60%
R2
1 20%
R3
1 20%
R4
R5

Striking profile

Where significant strikes land — by target zone and by position. 442 landed total · career

Targets head · body · leg
65% Head
  • Head 65%
  • Body 15%
  • Leg 20%
Positions distance · clinch · ground
78% Distance
  • Distance 78%
  • Clinch 7%
  • Ground 15%

Durability

How they're beaten How fights end AGAINST this fighter. Finished-against rate = (times KO'd + submitted) / total UFC losses. A low rate means they rarely get stopped.
78%
of losses by finish
7 of 9 · usually R1
2 KO/TKO 5 Sub 2 Dec

Strength of schedule in UFC

Avg opp Elo (last 5) Average Elo rating of the last 5 opponents this fighter faced. A proxy for schedule difficulty — 1700+ is elite-level competition, 1500 is a UFC average opponent.
1510
UFC level
Quality wins (1600+) Wins over opponents rated 1600+ Elo at the time of the fight — clearly above the ~1500 UFC average, contender tier. A count of genuine quality results, not record-padding.
1
of 8 UFC wins
Toughest win The highest-rated opponent this fighter has a win over, by that opponent's Elo at fight time.
Renan Barao
Elo 1619 at fight time
Expected wins How many wins an average fighter would be expected to have against this exact schedule, based on pre-fight Elo win probabilities. The line below shows whether this fighter is over- or under-performing their matchups.
8.7
−0.7 wins below what this schedule implies
Opponent Elo over career · 17 UFC fights, oldest → newest
1583
1408
Notable wins
Renan Barao 1619

Top bantamweight

See full rankings →
Merab Dvalishvili
#1 · Elo 1679
Petr Yan C
#2 · Elo 1661
Umar Nurmagomedov
#3 · Elo 1649
Sean O'Malley
#4 · Elo 1632
Farid Basharat
#5 · Elo 1630
Source Raw fight data and per-bout statistics come from Brian Kelleher on UFCStats →. Elo rating, uncertainty bands, and division-relative analytics computed by HonestElo — not affiliated with or endorsed by the Ultimate Fighting Championship.