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UFC Fight Night: Costa vs. Vettori
Mason Jones
Mason Jones
10-1 · GBR
VS
David Onama
David Onama
8-0 · USA
October 23, 2021 · Las Vegas, Nevada, USA
Lightweight · 3 rounds
Mason Jones def. David Onama by U-DEC, R3 5:00
Performance
Round by round
SSTDKDCtrl
R1
Jones30/663/502:34
Onama30/600/000:09
R2
Jones33/522/402:49
Onama35/590/100:00
R3
Jones24/393/503:38
Onama25/340/000:02
Total
Jones87/1578/1409:01
Onama90/1530/100:11

Scorecards

Jones vs Onama

RdEric ColónRon McCarthyTony WeeksCommunity
R110-910-910-99.9-9.1
R29-109-109-109.4-9.6
R310-910-910-99.8-9.2
Total29-2829-2829-2829.1-27.9

Media (9 cards) · avg 29.327.7 · 9 Jones · 0 Onama

Official cards + public consensus via MMA Decisions. Per round: Jones-Onama.

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
JonesWin probabilityOnama
62.5%37.5%
KO / TKO
29%
Submission
19%
Decision
52%
Expected fight time: 10.5 min
Retrospective pick: the walk-forward model's call at the time of the fight — persisted out-of-sample, with no hindsight about the result.
What drives the pick

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

Predicted outcomes
Jones62%
Wins by
Model
Equity
Mkt
KO / TKO16%26%42%
Submission11%18%13%
Decision35%56%21%
Predicted output
Sig. strikes43 (1859)act 87
Takedowns2.1 (0.05.6)act 8
Onama38%
Wins by
Model
Equity
Mkt
KO / TKO13%33%11%
Submission7%20%4%
Decision18%47%8%
Predicted output
Sig. strikes41 (1755)act 90
Takedowns0.5 (0.02.0)act 0
Combined totals~84 sig strikes~2.6 takedownsmkt —
How it ends
mkt —
R126%
R215%
R37%
Distance52%
Fighter props
Most sig. strikestie 1.1%
Jones
51.3%-108
Onama
+10847.5%
Most takedownstie 22.1%
Jones
62.7%-411
Onama
+41115.2%
Significant strikes — over/under
Jones
Expected: 43.2
43
Over 43
39.5%
+151
Exactly 43
1.1%
push
Under 43
59.4%
-151
055109
Onama
Expected: 40.5
40.5
Over 40.5
39.8%
+151
Under 40.5
60.2%
-151
051102
Takedowns — over/under
Jones
Expected: 2.1
2
Over 2
40.4%
+109
Exactly 2
15.7%
push
Under 2
43.9%
-109
047
Onama
Expected: 0.5
0.5
Over 0.5
35.3%
+183
Under 0.5
64.7%
-183
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 10.5 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
Jones62.5%77.7%−15.2-439
Onama37.5%22.3%+15.2+329
By method
Jones by KO/TKO18.2%41.8%−23.6-105
Jones by submission11.6%13.1%−1.5+524
Jones by decision32.7%21.4%+11.3+282
Onama by KO/TKO10.9%11.4%−0.5+616
Onama by submission7.0%4.4%+2.6+1770
Onama by decision19.6%7.9%+11.7+931
Total rounds (over)
Over 1.5 rds74.4%51.7%+22.7-124
Over 2.5 rds59.8%35.4%+24.4+163
Goes the distance
Fight goes to decision52.3%30.7%+21.6+205

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.

Trait web
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
JonesOnama
Tale of the tape
Ratings (Elo)
1523
Pound-for-pound
1527
1523
Divisional
1527
1487
Striking offense
1500
1502
Striking defense
1500
1551
Grappling offense
1500
1551
Grappling defense
1500
Physical
26 yrs
Age
27 yrs
5'10"
Height
5'11"
74"
Reach
74"
Orthodox
Stance
Orthodox
Striking (UFC career)
7.33
Strikes landed / min
41%
Strike accuracy
5.31
Strikes absorbed / min
51%
Strike defense
Grappling (UFC career)
2.02
Takedowns / 15 min
43%
Takedown accuracy
77%
Takedown defense
0.0
Sub attempts / 15 min
Form & résumé
0%
UFC win rate
-2
Win/loss streak
0%
Last-5 win rate
Finish rate
Recent opp. quality
140
Days since last fight
Recent form (last 5 UFC)
Mason Jones
  • LMike DavisU-DEC R3
    Close +1339mo before
David Onama
No prior UFC fights.
Jones — win / loss by method
Record: 10-1-0, 1 NC

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, 0 losses
W
40% of wins
L
0% of losses
Submission
3 wins, 0 losses
W
30% of wins
L
0% of losses
Decision
3 wins, 1 loss
W
30% of wins
L
100% of losses
UFC
0win1loss0draw1NC
WinsLosses
0 ()KO/TKO(0%) 0
0 ()Submission(0%) 0
0 ()Decision(100%) 1
Non-UFC
10win0loss0draw0NC
WinsLosses
4 (40%)KO/TKO() 0
3 (30%)Submission() 0
3 (30%)Decision() 0
Onama — win / loss by method
Record: 8-0-0

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
5 wins, 0 losses
W
63% of wins
L
Submission
3 wins, 0 losses
W
38% of wins
L
Decision
0 wins, 0 losses
W
0% of wins
L
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
8win0loss0draw0NC
WinsLosses
5 (63%)KO/TKO() 0
3 (38%)Submission() 0
0 (0%)Decision() 0

Profiles

Experience
Jones
Onama
2
UFC fights
0
22.2 min · 11.1 avg
Octagon time
8y 9m
Career length
UFC schedule strength

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

Jones
Onama
8W–2L · 80.0%
Overall
0W–0L
Wins
8W–2L · 80.0%
Losses
Non-UFC schedule strength
Jones
Onama
70W–24L · 74.5%
Overall
31W–21L · 59.6%
70W–24L · 74.5%
Wins
31W–21L · 59.6%
0W–0L
Losses
0W–0L
Distance striking
Jones
Onama
7.56
Landed / min
35.7%
Accuracy
52.3%
Defense
0.00
Knockdowns / 15 min
68.4%
Time at distance
Grappling & control
Jones
Onama
2.02
Takedowns / 15 min
42.9%
Takedown accuracy
76.9%
Takedown defense
0.00
Sub attempts / 15 min
84.0%
Control share
Strike target map
Jones
  • Head71%(115)div 63%
  • Body19%(31)div 20%
  • Legs10%(17)div 17%
Onama
  • Head0%(0)div 63%
  • Body0%(0)div 20%
  • Legs0%(0)div 17%
  • No strike data on record.

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

Mason Jones
CloseSSTDKDCtrl

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

David Onama

No UFC fights on record.

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