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The Ultimate Fighter: Team Hughes vs. Team Serra Finale
Matt Arroyo
Matt Arroyo
2-1 · USA
VS
John Kolosci
John Kolosci
8-4 · USA
December 8, 2007 · Las Vegas, Nevada, USA
Welterweight · 3 rounds
169.0lb
Weigh-in
170.0lb
Matt Arroyo def. John Kolosci by SUB (Armbar), R1 4:42
Performance
Round by round
SSTDKDCtrl
R1 · 4:42
Arroyo4/80/000:59
Kolosci1/50/203:23
Total
Arroyo4/80/000:59
Kolosci1/50/203:23

Pre-fight

The model's read going in

The walk-forward model's call at the time of the bout — persisted out-of-sample, with no hindsight about the result.

Prediction
ArroyoWin probabilityKolosci
81.3%18.7%
KO / TKO
27%
Submission
32%
Decision
41%
Expected fight time: 9.5 min
What drives the pick

Each bar is a feature's push on the model from the center axis. Red pushes toward Arroyo, blue toward Kolosci. Tap a bar for why.

Predicted outcomes
Arroyo81%
Wins by
Model
Equity
Mkt
KO / TKO21%26%
Submission28%34%
Decision32%40%
Predicted output
Sig. strikes36 (2047)act 4
Takedowns1.7 (0.23.8)act 0
Kolosci19%
Wins by
Model
Equity
Mkt
KO / TKO7%35%
Submission4%22%
Decision8%43%
Predicted output
Sig. strikes34 (1944)act 1
Takedowns0.3 (0.01.6)act 0
Combined totals~70 sig strikes~2.0 takedownsmkt —
How it ends
mkt —
R127%
R226%
R36%
Distance41%
Fighter props
Most sig. strikestie 1.6%
Arroyo
52.3%-113
Kolosci
+11346.1%
Most takedownstie 14.1%
Arroyo
76.9%-855
Kolosci
+8559.0%
Significant strikes — over/under
Arroyo
Expected: 36.0
36
Over 36
41.5%
+136
Exactly 36
1.8%
push
Under 36
56.7%
-136
04590
Kolosci
Expected: 33.6
33.5
Over 33.5
42.8%
+134
Under 33.5
57.2%
-134
04385
Takedowns — over/under
Arroyo
Expected: 1.7
1.5
Over 1.5
60.5%
-153
Under 1.5
39.5%
+153
036
Kolosci
Expected: 0.3
0.5
Over 0.5
38.0%
+163
Under 0.5
62.0%
-163
035

Odds are model-implied (no real prop market is priced for these). The “most” prices are draw-no-bet — a tie (for takedowns, usually 0–0) is a push, so each side is priced off its chance of winning given a result, while the % shown is the raw chance of landing strictly more. Drag a line in half-point steps: a half line (e.g. 2.5) is a clean over/under, while a whole number adds a third outcome — landing exactly on it, a push — so over, exact and under sum to 100%. On a whole number the over/under odds are draw-no-bet (priced off the decisive mass, since the push refunds), so the two sides stay mirror images rather than implying an arbitrage.

Expected fight time 9.5 min. Predicted-output ranges are percentiles of the model’s simulated fights: sig strikes the middle 50% (25th–75th); takedowns the wider 10th–90th, since they’re 0 in most fights so a narrow band would collapse to 0. Win-by-method = win probability × that fighter’s own method split: the model forecasts how the fight ends, and that forecast is divided between the corners by each fighter’s finishing record — UFC wins in full, earlier-career wins at half weight, as of fight night — reconciled so the fighters’ totals still equal their win probabilities and the methods still total the fight-level forecast above. “Equity” is each of those over that fighter’s win % — how they win given that they win — so a column adds to 100%, and it differs by corner. A fighter with no classifiable wins at any level leans on the fight-level split. “How it ends” is the model’s round-of-finish split. “Mkt” is the de-vigged market prop (consensus across books), shown for context, not as a betting signal; rounds & totals slots fill as that data lands. Percentages are apportioned by largest remainder, so each set adds to its total exactly and an individual figure can sit a point off its own rounding.

Model vs market
Final
ModelMarketGapLine
To win
Arroyo81.3%72.9%+8.4-308
Kolosci18.7%27.1%−8.4+256

Market % is the de-vigged (no-vig) consensus across the books that price both fighters; the line is the average across books with the min–max range in parentheses. Gap is the model minus the market in points (+ = the model rates that outcome above the market). Thin or one-sided markets are flagged or left blank rather than shown as a fabricated %. Shown for context, not as a bet — the closing line is the sharpest public price and the model trails it on average. For 5-round bouts the model splits its round-3+ finish mass into rounds 3–5 by the historical within-bucket rate, so the over-3.5 / 4.5 lines carry a model estimate.

Tale of the tape
Ratings (Elo)
1500
Pound-for-pound
1501
1500
Divisional
1501
Striking offense
Striking defense
1561
Grappling offense
1500
1558
Grappling defense
1500
Physical
25 yrs
Age
33 yrs
5'10"
Height
5'11"
72"
Reach
Orthodox
Stance
Orthodox
Striking (UFC career)
Strikes landed / min
Strike accuracy
Strikes absorbed / min
Strike defense
Grappling (UFC career)
Takedowns / 15 min
Takedown accuracy
Takedown defense
Sub attempts / 15 min
Form & résumé
UFC win rate
Win/loss streak
Last-5 win rate
Finish rate
Recent opp. quality
Days since last fight
Recent form (last 5 UFC)
Matt Arroyo
No prior UFC fights.
John Kolosci
No prior UFC fights.
Arroyo — win / loss by method
Record: 2-1-0

Bar length is fight count (largest bar = full width); shading splits finishes by round and decisions by unanimous vs split — tap a bar for the round-by-round count.

KO/TKO
0 wins, 1 loss
W
0% of wins
L
100% of losses
Submission
2 wins, 0 losses
W
100% of wins
L
0% of losses
Decision
0 wins, 0 losses
W
0% of wins
L
0% of losses
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
2win1loss0draw0NC
WinsLosses
0 (0%)KO/TKO(100%) 1
2 (100%)Submission(0%) 0
0 (0%)Decision(0%) 0
Kolosci — win / loss by method
Record: 8-4-0

Bar length is fight count (largest bar = full width); shading splits finishes by round and decisions by unanimous vs split — tap a bar for the round-by-round count.

KO/TKO
4 wins, 1 loss
W
50% of wins
L
25% of losses
Submission
1 win, 2 losses
W
13% of wins
L
50% of losses
Decision
3 wins, 1 loss
W
38% of wins
L
25% of losses
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
8win4loss0draw0NC
WinsLosses
4 (50%)KO/TKO(25%) 1
1 (13%)Submission(50%) 2
3 (38%)Decision(25%) 1

Profiles

Experience
Arroyo
Kolosci
0
UFC fights
0
Octagon time
Career length
UFC schedule strength

Opponents' records on fight night — toggle their full cross-promotional record vs UFC bouts only.

Arroyo
Kolosci
Overall
Wins
Losses
Non-UFC schedule strength
Arroyo
Kolosci
5W–5L · 50.0%
Overall
36W–34L · 51.4%
1W–2L · 33.3%
Wins
12W–7L · 63.2%
4W–3L · 57.1%
Losses
24W–27L · 47.1%
Distance striking
Arroyo
Kolosci
Landed / min
Accuracy
Defense
Knockdowns / 15 min
Time at distance
Grappling & control
Arroyo
Kolosci
Takedowns / 15 min
Takedown accuracy
Takedown defense
Sub attempts / 15 min
Control share
Strike target map
Arroyo
  • Head0%(0)div 65%
  • Body0%(0)div 20%
  • Legs0%(0)div 14%
  • No strike data on record.
Kolosci
  • Head0%(0)div 65%
  • Body0%(0)div 20%
  • Legs0%(0)div 14%
  • No strike data on record.

Where each fighter lands significant strikes (career). “div” = the weight-class average.

Matt Arroyo

No UFC fights on record.

Per-fight: SS & TD shown landed/attempted; Close = consensus closing line.

John Kolosci

No UFC fights on record.

Per-fight: SS & TD shown landed/attempted; Close = consensus closing line.