Dennis Siver

LightweightOutfighter
12 - 81 NC

21 UFC Fights | 57% Win Rate | 5 Finishes (42%)

Height
5' 6"
Reach
70"
Weight
145 lbs.
Age
47
Orthodox

Dennis Siver UFC Record & Pro MMA Record

Dennis Siver is 12-8 in the UFC across 21 fights (1 no contest), with 3 wins by knockout, 2 by submission and 7 by decision. The full pro MMA record is 23-11 (1 NC), 11-3 of it outside the UFC. Siver competes at lightweight as an orthodox outfighter, standing 5'6" with a 70" reach at 47 years old. The last bout was a win over BJ Penn by decision in Jun 2017.

Best attribute: knockdown power (knockdowns scored per fight) — 84th percentile among 300 lightweight fighters (0.35/fight).

Dennis Siver's UFC win rate is 57% (12 of 21 fights), and 42% of those wins came by finish. Siver averages 0.6 takedowns per fight at 29% accuracy and stops 68% of opponents' takedown attempts.

Pro MMA Record
23-11 (1 NC)
UFC Record
12-8 (1 NC)
Height
5'6"
Reach
70"
Age
47
Stance
Orthodox
Last Fight
W vs BJ Penn · Decision · Jun 2017

Pro record from Sherdog (snapshot 2026-07-03) plus every UFC bout since; UFC record from UFCStats.

Dennis Siver's Last 5 Fights

Siver is 2-2, with one no contest, in the last five UFC fights.

  1. Win vs BJ Penn · Decision · R3 5:00 · UFC Fight Night: Chiesa vs. Lee · Jun 2017
  2. Loss vs Tatsuya Kawajiri · Decision · R3 5:00 · UFC Fight Night: Jedrzejczyk vs Penne · Jun 2015
  3. Loss vs Conor McGregor · KO/TKO · R2 1:54 · UFC Fight Night: McGregor vs Siver · Jan 2015
  4. Win vs Charles Rosa · Decision · R3 5:00 · UFC Fight Night: Nelson vs Story · Oct 2014
  5. No contest vs Manvel Gamburyan · Other · R3 5:00 · UFC 168: Weidman vs Silva 2 · Dec 2013

Striking

Fighter Profile

Offensive Output

Sig. Strikes / Min
3.9
+1.4x ratio
Accuracy
32%
Knockdowns / Fight
0.35

Defensive

Absorbed / Min
2.8
0.8x avg
Strike Differential
+1.1
Opp. Accuracy Against
35%
hard to hit

Strike Targets

Position Breakdown

Grappling

Takedowns & Control

Takedowns / Fight
0.6
Takedown Accuracy
29%
Takedown Defense
68%
Control Time / Fight
1:37
Sub Attempts / Fight
0.3

Win Methods

Finish Probability by Round

R1
0% KO
10% Sub
R2
10% KO
0% Sub
R3+
5% KO
0% Sub

Round-by-Round Output

Sig. Strikes Landed per Round — Dennis Siver vs Average

Dennis Siver lands 17.8 strikes in R1 but 19.4 in R3+ — output increases in later rounds.

Dennis Siver's UFC Fight History

21 UFC fights on record (12-8 (1 NC)), most recent first.

ResultOpponentMethodRd · TimeEventDate
WBJ PennDecisionR3 · 5:00UFC Fight Night: Chiesa vs. Lee2017-06-25
LTatsuya KawajiriDecisionR3 · 5:00UFC Fight Night: Jedrzejczyk vs Penne2015-06-20
LConor McGregorKO/TKOR2 · 1:54UFC Fight Night: McGregor vs Siver2015-01-18
WCharles RosaDecisionR3 · 5:00UFC Fight Night: Nelson vs Story2014-10-04
D/NCManvel GamburyanOtherR3 · 5:00UFC 168: Weidman vs Silva 22013-12-28
LCub SwansonKO/TKOR3 · 2:24UFC 162: Silva vs Weidman2013-07-06
WNam PhanDecisionR3 · 5:00UFC on FOX: Henderson vs Diaz2012-12-08
WDiego NunesDecisionR3 · 5:00UFC on FUEL TV: Gustafsson vs Silva2012-04-14
LDonald CerroneSubmissionR1 · 2:22UFC 137: Penn vs Diaz2011-10-29
WMatt WimanDecisionR3 · 5:00UFC 132: Cruz vs Faber2011-07-02
WGeorge SotiropoulosDecisionR3 · 5:00UFC 127: Penn vs Fitch2011-02-26
WAndre WinnerSubmissionR1 · 3:37UFC 122: Marquardt vs Okami2010-11-13
WSpencer FisherDecisionR3 · 5:00The Ultimate Fighter: Team Liddell vs Team Ortiz Finale2010-06-19
LRoss PearsonDecisionR3 · 5:00UFC Fight Night: Florian vs Gomi2010-03-31
WPaul KellyKO/TKOR2 · 2:53UFC 105: Couture vs Vera2009-11-14
WDale HarttSubmissionR1 · 3:23UFC 99: The Comeback2009-06-13
WNate MohrKO/TKOR3 · 3:45UFC 93: Franklin vs Henderson2009-01-17
LMelvin GuillardKO/TKOR1 · 0:36UFC 86: Jackson vs Griffin2008-07-05
LGray MaynardDecisionR3 · 5:00UFC Fight Night: Swick vs Burkman2008-01-23
WNaoyuki KotaniKO/TKOR2 · 2:04UFC 75: Champion vs Champion2007-09-08
LJess LiaudinSubmissionR1 · 1:21UFC 70: Nations Collide2007-04-21

How Siver Ranks at Lightweight

Percentile among the 300 lightweight fighters in our database (higher is better; absorbed strikes are inverted).

Striking volume3.9 sig. strikes/min
70th percentile
Striking accuracy32%
9th percentile
Strikes absorbed2.8/min
66th percentile
Takedowns0.6/fight
32nd percentile
Takedown defense68%
59th percentile
Knockdown power0.35/fight
84th percentile

Featured In

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