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UFC Fight Night: Santos vs. Ankalaev
VS
Karl Roberson
Karl Roberson
9-4 · USA
March 12, 2022 · Las Vegas, Nevada, USA
Light Heavyweight · 3 rounds
205.0lb
Weigh-in
203.0lb
Khalil Rountree Jr. def. Karl Roberson by KO/TKO (Punch), R2 0:25
Performance
Round by round
SSTDKDCtrl
R1
Rountree Jr.18/540/000:00
Roberson17/270/000:00
R2 · 0:25
Rountree Jr.8/150/020:15
Roberson0/10/000:00
Total
Rountree Jr.26/690/020:15
Roberson17/280/000:00

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
Rountree Jr.Win probabilityRoberson
42.5%57.5%
KO / TKO
50%
Submission
13%
Decision
37%
Expected fight time: 8.7 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 Rountree Jr., blue toward Roberson. Tap a bar for why.

Predicted outcomes
Rountree Jr.42%
Wins by
Model
Equity
Mkt
KO / TKO26%63%27%
Submission2%4%4%
Decision14%33%15%
Predicted output
Sig. strikes26 (1035)act 26
Takedowns0.4 (0.01.7)act 0
Roberson58%
Wins by
Model
Equity
Mkt
KO / TKO23%40%25%
Submission11%19%9%
Decision24%41%20%
Predicted output
Sig. strikes29 (1239)act 17
Takedowns0.7 (0.02.7)act 0
Combined totals~55 sig strikes~1.1 takedownsmkt —
How it ends
mkt —
R138%
R219%
R36%
Distance37%
Fighter props
Most sig. strikestie 1.7%
Rountree Jr.
45.3%+117
Roberson
-11753.0%
Most takedownstie 46.3%
Rountree Jr.
19.4%+176
Roberson
-17634.2%
Significant strikes — over/under
Rountree Jr.
Expected: 26.0
26
Over 26
38.8%
+153
Exactly 26
1.8%
push
Under 26
59.4%
-153
03365
Roberson
Expected: 29.1
29
Over 29
39.1%
+151
Exactly 29
1.7%
push
Under 29
59.2%
-151
03773
Takedowns — over/under
Rountree Jr.
Expected: 0.4
0.5
Over 0.5
26.7%
+275
Under 0.5
73.3%
-275
035
Roberson
Expected: 0.7
0.5
Over 0.5
40.8%
+145
Under 0.5
59.2%
-145
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 8.7 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
Rountree Jr.42.5%43.1%−0.6+121
Roberson57.5%56.9%+0.6-148
By method
Rountree Jr. by KO/TKO21.1%26.6%−5.5+204
Rountree Jr. by submission5.6%3.9%+1.7+1965
Rountree Jr. by decision15.8%15.0%+0.8+440
Roberson by KO/TKO28.6%25.2%+3.4+221
Roberson by submission7.5%9.0%−1.5+794
Roberson by decision21.4%20.4%+1.0+296
Total rounds (over)
Over 1.5 rds62.4%58.9%+3.5-170
Over 2.5 rds43.8%43.3%+0.5+115
Goes the distance
Fight goes to decision37.3%38.2%−0.9+145

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
57.8Striking69.2
Roberson +11.4
16.1Grappling50.8
Roberson +34.6
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
Rountree Jr.Roberson
Tale of the tape
Ratings (Elo)
1515
Pound-for-pound
1524
1514
Divisional
1505
1509
Striking offense
1493
1496
Striking defense
1527
Grappling offense
Grappling defense
Physical
32 yrs
Age
31 yrs
6'1"
Height
6'1"
76"
Reach
74"
Southpaw
Stance
Southpaw
Striking (UFC career)
3.24
Strikes landed / min
2.80
39%
Strike accuracy
51%
3.58
Strikes absorbed / min
2.37
50%
Strike defense
57%
Grappling (UFC career)
0.00
Takedowns / 15 min
0.92
Takedown accuracy
57%
50%
Takedown defense
45%
0.2
Sub attempts / 15 min
0.7
Form & résumé
45%
UFC win rate
50%
+1
Win/loss streak
-2
40%
Last-5 win rate
40%
80%
Finish rate
50%
Recent opp. quality
189
Days since last fight
322
Recent form (last 5 UFC)
Khalil Rountree Jr.
  • WModestas BukauskasKO/TKO R2
    Close +1336mo before
  • LMarcin PrachnioU-DEC R3
    Close -3651y 2mo before
  • LIon CutelabaKO/TKO R1
    Close -1152y 5mo before
  • WEryk AndersU-DEC R3
    Close +1602y 11mo before
  • LJohnny WalkerKO/TKO R1
    Close -1553y 4mo before
Karl Roberson
  • LBrendan AllenSUB R1
    Close +13211mo before
  • LMarvin VettoriSUB R1
    missedClose +2101y 9mo before
  • WRoman KopylovSUB R3
    Close +1252y 4mo before
  • WWellington TurmanS-DEC R3
    Close -2202y 8mo before
  • LGlover TeixeiraSUB R1
    Close -1103y 2mo before
Rountree Jr. — win / loss by method
Record: 9-5-0, 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
6 wins, 2 losses
W
67% of wins
L
40% of losses
Submission
0 wins, 1 loss
W
0% of wins
L
20% of losses
Decision
3 wins, 2 losses
W
33% of wins
L
40% of losses
UFC
5win5loss0draw1NC
WinsLosses
4 (80%)KO/TKO(40%) 2
0 (0%)Submission(20%) 1
1 (20%)Decision(40%) 2
Non-UFC
4win0loss0draw0NC
WinsLosses
2 (50%)KO/TKO() 0
0 (0%)Submission() 0
2 (50%)Decision() 0
Roberson — win / loss by method
Record: 9-4-0

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
2 wins, 0 losses
W
22% of wins
L
0% of losses
Submission
4 wins, 4 losses
W
44% of wins
L
100% of losses
Decision
3 wins, 0 losses
W
33% of wins
L
0% of losses
UFC
4win4loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
2 (50%)Submission(100%) 4
2 (50%)Decision(0%) 0
Non-UFC
5win0loss0draw0NC
WinsLosses
2 (40%)KO/TKO() 0
2 (40%)Submission() 0
1 (20%)Decision() 0

Profiles

Experience
Rountree Jr.
Roberson
11
UFC fights
8
83.5 min · 7.6 avg
Octagon time
65.0 min · 8.1 avg
12y 2m
Career length
11y 2m
UFC schedule strength

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

Rountree Jr.
Roberson
89W–24L · 78.8%
Overall
120W–31L · 79.5%
37W–10L · 78.7%
Wins
52W–10L · 83.9%
52W–14L · 78.8%
Losses
68W–21L · 76.4%
Non-UFC schedule strength
Rountree Jr.
Roberson
12W–3L · 80.0%
Overall
25W–10L · 71.4%
12W–3L · 80.0%
Wins
25W–10L · 71.4%
0W–0L
Losses
0W–0L
Distance striking
Rountree Jr.
Roberson
3.75
Landed / min
3.26
36.4%
Accuracy
37.7%
53.0%
Defense
70.0%
1.62
Knockdowns / 15 min
0.23
74.6%
Time at distance
45.8%
Grappling & control
Rountree Jr.
Roberson
0.00
Takedowns / 15 min
0.92
Takedown accuracy
57.1%
50.0%
Takedown defense
45.0%
0.18
Sub attempts / 15 min
0.69
7.6%
Control share
42.5%
Strike target map
Rountree Jr.
  • Head58%(157)div 65%
  • Body19%(52)div 19%
  • Legs23%(62)div 16%
Roberson
  • Head65%(119)div 65%
  • Body15%(27)div 19%
  • Legs20%(36)div 16%

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

Khalil Rountree Jr.
CloseSSTDKDCtrl

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

Karl Roberson
CloseSSTDKDCtrl

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