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UFC Fight Night: Allen vs. Costa
Alice Ardelean
Alice Ardelean
13-7 · ROU
VS
Polyana Viana
Polyana Viana
13-8 · BRA
May 16, 2026 · Las Vegas, Nevada, USA
Strawweight · 3 rounds
116.0lb
Weigh-in
115.5lb
Alice Ardelean def. Polyana Viana by SUB (Calf Slicer), R2 4:36
Performance
Round by round
SSTDKDCtrl
R1
Ardelean41/850/000:00
Viana31/710/000:13
R2 · 4:36
Ardelean5/91/104:05
Viana3/40/000:00
Total
Ardelean46/941/104:05
Viana34/750/000:13

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
ArdeleanWin probabilityViana
43.3%56.7%
KO / TKO
34%
Submission
16%
Decision
50%
Expected fight time: 10.2 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 Ardelean, blue toward Viana. Tap a bar for why.

Predicted outcomes
Ardelean43%
Wins by
Model
Equity
Mkt
KO / TKO12%28%9%
Submission4%10%12%
Decision27%62%40%
Predicted output
Sig. strikes52 (2271)act 46
Takedowns1.1 (0.03.7)act 1
Viana57%
Wins by
Model
Equity
Mkt
KO / TKO22%39%8%
Submission12%20%14%
Decision23%41%18%
Predicted output
Sig. strikes43 (1858)act 34
Takedowns0.3 (0.01.6)act 0
Combined totals~95 sig strikes~1.5 takedownsmkt —
How it ends
mkt —
R127%
R216%
R36%
Distance51%
Fighter props
Most sig. strikestie 1.0%
Ardelean
55.6%-128
Viana
+12843.4%
Most takedownstie 34.1%
Ardelean
50.3%-322
Viana
+32215.6%
Significant strikes — over/under
Ardelean
Expected: 52.0
52
Over 52
39.3%
+152
Exactly 52
0.9%
push
Under 52
59.8%
-152
066131
Viana
Expected: 43.0
43
Over 43
39.2%
+152
Exactly 43
1.1%
push
Under 43
59.7%
-152
054108
Takedowns — over/under
Ardelean
Expected: 1.1
1
Over 1
38.5%
+107
Exactly 1
20.5%
push
Under 1
41.1%
-107
035
Viana
Expected: 0.3
0.5
Over 0.5
27.4%
+265
Under 0.5
72.6%
-265
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 10.2 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
Ardelean43.3%62.4%−19.1-188
Viana56.7%37.6%+19.1+154
By method
Ardelean by KO/TKO14.7%8.9%+5.8+849
Ardelean by submission6.8%11.7%−4.9+616
Ardelean by decision21.8%39.6%−17.8+112
Viana by KO/TKO19.2%7.9%+11.3+962
Viana by submission8.9%14.2%−5.3+491
Viana by decision28.5%17.7%+10.8+376
Total rounds (over)
Over 1.5 rds72.7%76.0%−3.3-441
Over 2.5 rds56.5%51.7%+4.8-222
Goes the distance
Fight goes to decision50.3%60.2%−9.9-179

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
71.3Striking62.4
Ardelean +8.9
49.0Grappling49.8
Viana +0.8
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
ArdeleanViana
Tale of the tape
Ratings (Elo)
1509
Pound-for-pound
1479
1509
Divisional
1490
1509
Striking offense
1509
1496
Striking defense
1496
1488
Grappling offense
1492
1526
Grappling defense
1467
Physical
34 yrs
Age
33 yrs
5'3"
Height
5'5"
62"
Reach
67"
Orthodox
Stance
Orthodox
Striking (UFC career)
7.35
Strikes landed / min
2.74
46%
Strike accuracy
40%
5.20
Strikes absorbed / min
2.50
62%
Strike defense
53%
Grappling (UFC career)
1.00
Takedowns / 15 min
0.75
44%
Takedown accuracy
33%
86%
Takedown defense
35%
0.0
Sub attempts / 15 min
1.7
Form & résumé
50%
UFC win rate
36%
+2
Win/loss streak
-3
50%
Last-5 win rate
20%
0%
Finish rate
100%
Recent opp. quality
196
Days since last fight
385
Recent form (last 5 UFC)
Alice Ardelean
  • WMontserrat Conejo RuizU-DEC R3
    Close -3796mo before
  • WRayanne dos SantosU-DEC R3
    Close +17611mo before
  • LMelissa MartinezU-DEC R3
    Close +1251y 7mo before
  • LShauna BannonS-DEC R3
    Close +1601y 10mo before
Polyana Viana
  • LJaqueline AmorimSUB R2
    Close +6101y 1mo before
  • LGillian RobertsonKO/TKO R2
    Close +2402y 4mo before
  • LIasmin LucindoSUB R2
    Close +1622y 9mo before
  • WJinh Yu FreyKO/TKO R1
    Close -1433y 6mo before
  • LTabatha RicciU-DEC R3
    Close +1094y before
Ardelean — win / loss by method
Record: 13-7-0

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, 0 losses
W
31% of wins
L
0% of losses
Submission
5 wins, 2 losses
W
38% of wins
L
29% of losses
Decision
4 wins, 5 losses
W
31% of wins
L
71% of losses
UFC
2win2loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
0 (0%)Submission(0%) 0
2 (100%)Decision(100%) 2
Non-UFC
11win5loss0draw0NC
WinsLosses
4 (36%)KO/TKO(0%) 0
5 (45%)Submission(40%) 2
2 (18%)Decision(60%) 3
Viana — win / loss by method
Record: 13-8-0

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, 1 loss
W
38% of wins
L
13% of losses
Submission
8 wins, 3 losses
W
62% of wins
L
38% of losses
Decision
0 wins, 4 losses
W
0% of wins
L
50% of losses
UFC
4win7loss0draw0NC
WinsLosses
1 (25%)KO/TKO(14%) 1
3 (75%)Submission(43%) 3
0 (0%)Decision(43%) 3
Non-UFC
9win1loss0draw0NC
WinsLosses
4 (44%)KO/TKO(0%) 0
5 (56%)Submission(0%) 0
0 (0%)Decision(100%) 1

Profiles

Experience
Ardelean
Viana
4
UFC fights
11
60.0 min · 15.0 avg
Octagon time
79.7 min · 7.2 avg
14y 5m
Career length
12y 7m
UFC schedule strength

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

Ardelean
Viana
36W–14L · 72.0%
Overall
88W–40L · 68.8%
24W–12L · 66.7%
Wins
28W–17L · 62.2%
12W–2L · 85.7%
Losses
60W–23L · 72.3%
Non-UFC schedule strength
Ardelean
Viana
27W–29L · 48.2%
Overall
20W–11L · 64.5%
15W–21L · 41.7%
Wins
13W–5L · 72.2%
12W–8L · 60.0%
Losses
7W–6L · 53.8%
Distance striking
Ardelean
Viana
8.58
Landed / min
5.65
45.5%
Accuracy
35.7%
62.0%
Defense
59.9%
0.00
Knockdowns / 15 min
0.19
83.1%
Time at distance
38.6%
Grappling & control
Ardelean
Viana
1.00
Takedowns / 15 min
0.75
44.4%
Takedown accuracy
33.3%
85.7%
Takedown defense
35.0%
0.00
Sub attempts / 15 min
1.69
87.2%
Control share
13.6%
Strike target map
Ardelean
  • Head72%(319)div 61%
  • Body17%(76)div 23%
  • Legs10%(46)div 16%
Viana
  • Head50%(110)div 61%
  • Body30%(66)div 23%
  • Legs19%(42)div 16%

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

Alice Ardelean
CloseSSTDKDCtrl

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

Polyana Viana
CloseSSTDKDCtrl

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