The Ultimate Fight Fan
+ Log a bet
UFC 282: Blachowicz vs. Ankalaev
Raul Rosas Jr.
Raul Rosas Jr.
6-0 · USA
VS
Jay Perrin
Jay Perrin
10-6 · USA
December 10, 2022 · Las Vegas, Nevada, USA
Bantamweight · 3 rounds
136.0lb
Weigh-in
136.0lb
Raul Rosas Jr. def. Jay Perrin by SUB (Neck Crank), R1 2:44
Performance
Round by round
SSTDKDCtrl
R1 · 2:44
Rosas Jr.3/72/302:12
Perrin4/80/000:00
Total
Rosas Jr.3/72/302:12
Perrin4/80/000:00

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
Rosas Jr.Win probabilityPerrin
72.9%27.1%
KO / TKO
32%
Submission
22%
Decision
46%
Expected fight time: 9.9 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 Rosas Jr., blue toward Perrin. Tap a bar for why.

Predicted outcomes
Rosas Jr.73%
Wins by
Model
Equity
Mkt
KO / TKO24%33%10%
Submission17%23%29%
Decision32%44%28%
Predicted output
Sig. strikes41 (1756)act 3
Takedowns1.1 (0.03.6)act 2
Perrin27%
Wins by
Model
Equity
Mkt
KO / TKO9%31%8%
Submission5%19%6%
Decision13%50%18%
Predicted output
Sig. strikes34 (1446)act 4
Takedowns0.9 (0.03.1)act 0
Combined totals~75 sig strikes~2.0 takedownsmkt —
How it ends
mkt —
R130%
R215%
R39%
Distance46%
Fighter props
Most sig. strikestie 1.3%
Rosas Jr.
55.8%-130
Perrin
+13043.0%
Most takedownstie 27.1%
Rosas Jr.
40.4%-125
Perrin
+12532.5%
Significant strikes — over/under
Rosas Jr.
Expected: 41.1
41
Over 41
39.3%
+151
Exactly 41
1.2%
push
Under 41
59.5%
-151
052103
Perrin
Expected: 33.7
33.5
Over 33.5
40.0%
+150
Under 33.5
60.0%
-150
04385
Takedowns — over/under
Rosas Jr.
Expected: 1.1
1
Over 1
38.0%
+108
Exactly 1
20.7%
push
Under 1
41.3%
-108
035
Perrin
Expected: 0.9
1
Over 1
32.4%
+148
Exactly 1
19.6%
push
Under 1
48.0%
-148
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 9.9 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
Rosas Jr.72.9%69.7%+3.2-270
Perrin27.1%30.3%−3.2+215
By method
Rosas Jr. by KO/TKO23.6%10.2%+13.4+711
Rosas Jr. by submission15.9%29.2%−13.3+184
Rosas Jr. by decision33.4%28.4%+5.0+191
Perrin by KO/TKO8.8%7.9%+0.9+942
Perrin by submission5.9%6.5%−0.6+1181
Perrin by decision12.4%17.8%−5.4+364
Total rounds (over)
Over 1.5 rds69.5%65.7%+3.8-234
Over 2.5 rds54.7%54.9%−0.2-141
Goes the distance
Fight goes to decision45.8%49.3%−3.5-111

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
Rosas Jr.Perrin
Tale of the tape
Ratings (Elo)
1522
Pound-for-pound
1481
1522
Divisional
1483
1500
Striking offense
1503
1500
Striking defense
1498
1500
Grappling offense
1502
1500
Grappling defense
1501
Physical
18 yrs
Age
29 yrs
5'9"
Height
5'7"
67"
Reach
67"
Switch
Stance
Switch
Striking (UFC career)
Strikes landed / min
4.33
Strike accuracy
47%
Strikes absorbed / min
4.80
Strike defense
44%
Grappling (UFC career)
Takedowns / 15 min
2.50
Takedown accuracy
42%
Takedown defense
56%
Sub attempts / 15 min
0.0
Form & résumé
UFC win rate
0%
Win/loss streak
-2
Last-5 win rate
0%
Finish rate
Recent opp. quality
Days since last fight
112
Recent form (last 5 UFC)
Raul Rosas Jr.
No prior UFC fights.
Jay Perrin
  • L AoriqilengU-DEC R3
    Close +1114mo before
  • LMario BautistaU-DEC R3
    Close +28510mo before
Rosas Jr. — win / loss by method
Record: 6-0-0

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
1 win, 0 losses
W
17% of wins
L
Submission
4 wins, 0 losses
W
67% of wins
L
Decision
1 win, 0 losses
W
17% of wins
L
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
6win0loss0draw0NC
WinsLosses
1 (17%)KO/TKO() 0
4 (67%)Submission() 0
1 (17%)Decision() 0
Perrin — win / loss by method
Record: 10-6-0

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
0% of losses
Submission
4 wins, 1 loss
W
40% of wins
L
17% of losses
Decision
4 wins, 5 losses
W
40% of wins
L
83% of losses
UFC
0win2loss0draw0NC
WinsLosses
0 ()KO/TKO(0%) 0
0 ()Submission(0%) 0
0 ()Decision(100%) 2
Non-UFC
10win4loss0draw0NC
WinsLosses
2 (20%)KO/TKO(0%) 0
4 (40%)Submission(25%) 1
4 (40%)Decision(75%) 3

Profiles

Experience
Rosas Jr.
Perrin
0
UFC fights
2
Octagon time
30.0 min · 15.0 avg
Career length
12y 1m
UFC schedule strength

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

Rosas Jr.
Perrin
Overall
32W–14L · 69.6%
Wins
0W–0L
Losses
32W–14L · 69.6%
Non-UFC schedule strength
Rosas Jr.
Perrin
11W–4L · 73.3%
Overall
78W–37L · 67.8%
11W–4L · 73.3%
Wins
56W–27L · 67.5%
0W–0L
Losses
22W–10L · 68.8%
Distance striking
Rosas Jr.
Perrin
Landed / min
7.78
Accuracy
43.6%
Defense
50.5%
Knockdowns / 15 min
0.00
Time at distance
45.4%
Grappling & control
Rosas Jr.
Perrin
Takedowns / 15 min
2.50
Takedown accuracy
41.7%
Takedown defense
55.6%
Sub attempts / 15 min
0.00
Control share
54.2%
Strike target map
Rosas Jr.
  • Head0%(0)div 62%
  • Body0%(0)div 21%
  • Legs0%(0)div 17%
  • No strike data on record.
Perrin
  • Head61%(79)div 62%
  • Body30%(39)div 21%
  • Legs9%(12)div 17%

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

Raul Rosas Jr.

No UFC fights on record.

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

Jay Perrin
CloseSSTDKDCtrl

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