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UFC 245: Usman vs. Covington
Irene Aldana
Irene Aldana
11-5 · MEX
VS
Ketlen Vieira
Ketlen Vieira
10-0 · BRA
December 14, 2019 · Las Vegas, Nevada, USA
Bantamweight · 3 rounds
135.5lb
Weigh-in
136.0lb
Irene Aldana def. Ketlen Vieira by KO/TKO (Punch), R1 4:51
Performance
Round by round
SSTDKDCtrl
R1 · 4:51
Aldana26/710/010:02
Vieira20/760/000:00
Total
Aldana26/710/010:02
Vieira20/760/000:00

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
AldanaWin probabilityVieira
32.5%67.5%
KO / TKO
25%
Submission
7%
Decision
68%
Expected fight time: 12.4 min
What drives the pick

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

Predicted outcomes
Aldana32%
Wins by
Model
Equity
Mkt
KO / TKO10%32%
Submission2%6%
Decision20%62%
Predicted output
Sig. strikes63 (3682)act 26
Takedowns0.2 (0.00.6)act 0
Vieira68%
Wins by
Model
Equity
Mkt
KO / TKO15%23%
Submission5%7%
Decision48%70%
Predicted output
Sig. strikes64 (3683)act 20
Takedowns1.2 (0.03.3)act 0
Combined totals~127 sig strikes~1.3 takedownsmkt —
How it ends
mkt —
R110%
R215%
R37%
Distance68%
Fighter props
Most sig. strikestie 0.9%
Aldana
49.3%+101
Vieira
-10149.9%
Most takedownstie 35.3%
Aldana
8.0%+706
Vieira
-70656.7%
Significant strikes — over/under
Aldana
Expected: 63.3
63.5
Over 63.5
42.3%
+136
Under 63.5
57.7%
-136
080159
Vieira
Expected: 63.7
63.5
Over 63.5
42.7%
+134
Under 63.5
57.3%
-134
080160
Takedowns — over/under
Aldana
Expected: 0.2
0
Over 0
15.6%
Exactly 0
84.4%
push
Under 0
0.0%
035
Vieira
Expected: 1.2
1
Over 1
40.1%
-104
Exactly 1
21.5%
push
Under 1
38.5%
+104
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 12.4 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
Aldana32.5%32.1%+0.4+200
Vieira67.5%67.9%−0.4-240

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
64.3Striking56.7
Aldana +7.6
51.0Grappling71.4
Vieira +20.4
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
AldanaVieira
Tale of the tape
Ratings (Elo)
1536
Pound-for-pound
1581
1536
Divisional
1581
1508
Striking offense
1476
1494
Striking defense
1509
Grappling offense
Grappling defense
Physical
31 yrs
Age
28 yrs
5'9"
Height
5'8"
68"
Reach
68"
Orthodox
Stance
Orthodox
Striking (UFC career)
6.20
Strikes landed / min
2.62
39%
Strike accuracy
37%
6.01
Strikes absorbed / min
3.69
63%
Strike defense
56%
Grappling (UFC career)
0.29
Takedowns / 15 min
2.21
50%
Takedown accuracy
57%
94%
Takedown defense
92%
0.1
Sub attempts / 15 min
0.8
Form & résumé
57%
UFC win rate
100%
+1
Win/loss streak
+4
80%
Last-5 win rate
100%
25%
Finish rate
25%
Recent opp. quality
84
Days since last fight
651
Recent form (last 5 UFC)
Irene Aldana
  • WVanessa MeloU-DEC R3
    opp missedClose -5253mo before
  • LRaquel PenningtonS-DEC R3
    Close -1355mo before
  • WBethe CorreiaSUB R3
    opp missedClose -4007mo before
  • WLucie PudilovaS-DEC R3
    Close -1101y 3mo before
  • WTalita BernardoU-DEC R3
    Close -1351y 11mo before
Ketlen Vieira
  • WCat ZinganoS-DEC R3
    Close -2101y 9mo before
  • WSara McMannSUB R2
    Close +1702y 3mo before
  • WAshlee Evans-SmithU-DEC R3
    Close +1452y 8mo before
  • WKelly FaszholzS-DEC R3
    Close -1053y 2mo before
Aldana — win / loss by method
Record: 11-5-0

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, 2 losses
W
45% of wins
L
40% of losses
Submission
3 wins, 0 losses
W
27% of wins
L
0% of losses
Decision
3 wins, 3 losses
W
27% of wins
L
60% of losses
UFC
4win3loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
1 (25%)Submission(0%) 0
3 (75%)Decision(100%) 3
Non-UFC
7win2loss0draw0NC
WinsLosses
5 (71%)KO/TKO(100%) 2
2 (29%)Submission(0%) 0
0 (0%)Decision(0%) 0
Vieira — win / loss by method
Record: 10-0-0

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
2 wins, 0 losses
W
20% of wins
L
Submission
4 wins, 0 losses
W
40% of wins
L
Decision
4 wins, 0 losses
W
40% of wins
L
UFC
4win0loss0draw0NC
WinsLosses
0 (0%)KO/TKO() 0
1 (25%)Submission() 0
3 (75%)Decision() 0
Non-UFC
6win0loss0draw0NC
WinsLosses
2 (33%)KO/TKO() 0
3 (50%)Submission() 0
1 (17%)Decision() 0

Profiles

Experience
Aldana
Vieira
7
UFC fights
4
103.4 min · 14.8 avg
Octagon time
54.3 min · 13.6 avg
13y 9m
Career length
11y 10m
UFC schedule strength

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

Aldana
Vieira
58W–27L · 68.2%
Overall
28W–7L · 80.0%
33W–12L · 73.3%
Wins
28W–7L · 80.0%
25W–15L · 62.5%
Losses
0W–0L
Non-UFC schedule strength
Aldana
Vieira
45W–20L · 69.2%
Overall
2W–1L · 66.7%
22W–14L · 61.1%
Wins
2W–1L · 66.7%
23W–6L · 79.3%
Losses
0W–0L
Distance striking
Aldana
Vieira
6.73
Landed / min
4.43
37.3%
Accuracy
27.4%
63.9%
Defense
64.9%
0.00
Knockdowns / 15 min
0.00
83.2%
Time at distance
35.8%
Grappling & control
Aldana
Vieira
0.29
Takedowns / 15 min
2.21
50.0%
Takedown accuracy
57.1%
93.5%
Takedown defense
92.3%
0.15
Sub attempts / 15 min
0.83
12.1%
Control share
78.7%
Strike target map
Aldana
  • Head70%(446)div 64%
  • Body12%(80)div 20%
  • Legs18%(115)div 17%
Vieira
  • Head81%(115)div 64%
  • Body13%(18)div 20%
  • Legs6%(9)div 17%

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

Irene Aldana
CloseSSTDKDCtrl

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

Ketlen Vieira
CloseSSTDKDCtrl

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