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UFC Fight Night: Walker vs. Zhang
VS
Brian Ortega
Brian Ortega
16-4 · USA
August 23, 2025 · Shanghai, Hebei, China
Catch Weight · 5 rounds
Aljamain Sterling def. Brian Ortega by U-DEC, R5 5:00
Performance
Round by round
SSTDKDCtrl
R1
Sterling27/440/000:00
Ortega2/280/000:00
R2
Sterling13/540/000:00
Ortega9/400/000:00
R3
Sterling35/520/100:00
Ortega21/420/100:00
R4
Sterling25/391/101:36
Ortega13/370/000:02
R5
Sterling24/382/402:19
Ortega10/270/100:06
Total
Sterling124/2273/603:55
Ortega55/1740/200:08

Scorecards

Sterling vs Ortega

RdBen CartlidgeDavid LethabyVito PaolilloCommunity
R110-910-910-910-9
R210-910-910-910-9
R310-910-910-910-9
R410-910-910-910-9
R510-910-910-99.8-9.2
Total50-4550-4550-4549.8-45.2

Media (7 cards) · avg 5045 · 7 Sterling · 0 Ortega

Official cards + public consensus via MMA Decisions. Per round: Sterling-Ortega.

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
SterlingWin probabilityOrtega
75.1%24.9%
KO / TKO
25%
Submission
27%
Decision
48%
Expected fight time: 17.1 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 Sterling, blue toward Ortega. Tap a bar for why.

Predicted outcomes
Sterling75%
Wins by
Model
Equity
Mkt
KO / TKO17%23%11%
Submission19%25%20%
Decision39%52%43%
Predicted output
Sig. strikes91 (39123)act 124
Takedowns1.0 (0.03.5)act 3
Ortega25%
Wins by
Model
Equity
Mkt
KO / TKO9%34%5%
Submission8%33%8%
Decision8%33%12%
Predicted output
Sig. strikes54 (2273)act 55
Takedowns0.7 (0.02.6)act 0
Combined totals~144 sig strikes~1.7 takedownsmkt —
How it ends
mkt —
R114%
R218%
R310%
R46%
R54%
Distance48%
Fighter props
Most sig. strikestie 0.6%
Sterling
66.3%-201
Ortega
+20133.0%
Most takedownstie 37.1%
Sterling
38.5%-158
Ortega
+15824.4%
Significant strikes — over/under
Sterling
Expected: 90.7
90.5
Over 90.5
39.8%
+151
Under 90.5
60.2%
-151
0114227
Ortega
Expected: 53.6
53.5
Over 53.5
39.8%
+151
Under 53.5
60.2%
-151
068135
Takedowns — over/under
Sterling
Expected: 1.0
1
Over 1
32.8%
+157
Exactly 1
15.7%
push
Under 1
51.5%
-157
035
Ortega
Expected: 0.7
0.5
Over 0.5
35.5%
+182
Under 0.5
64.5%
-182
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 17.1 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
Sterling75.1%80.4%−5.3-538
Ortega24.9%19.6%+5.3+387
By method
Sterling by KO/TKO19.0%11.0%+8.0+654
Sterling by submission20.3%20.4%−0.1+307
Sterling by decision35.8%43.1%−7.3-108
Ortega by KO/TKO6.3%5.0%+1.3+1558
Ortega by submission6.7%8.0%−1.3+938
Ortega by decision11.9%12.4%−0.5+573
Total rounds (over)
Over 1.5 rds85.5%83.7%+1.8-851
Over 2.5 rds67.9%75.4%−7.5-429
Over 3.5 rds57.7%66.9%−9.2-257
Over 4.5 rds51.8%58.6%−6.8-167
Goes the distance
Fight goes to decision47.7%55.3%−7.6-144

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
77.2Striking50.6
Sterling +26.6
46.7Grappling46.0
Sterling +0.7
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
SterlingOrtega
Tale of the tape
Ratings (Elo)
1686
Pound-for-pound
1604
1546
Divisional
1527
1514
Striking offense
1515
1535
Striking defense
1479
1528
Grappling offense
1514
1512
Grappling defense
1532
Physical
36 yrs
Age
34 yrs
5'7"
Height
5'8"
71"
Reach
69"
Orthodox
Stance
Switch
Striking (UFC career)
4.41
Strikes landed / min
4.08
52%
Strike accuracy
38%
2.21
Strikes absorbed / min
6.59
59%
Strike defense
50%
Grappling (UFC career)
2.51
Takedowns / 15 min
1.07
30%
Takedown accuracy
26%
43%
Takedown defense
56%
0.7
Sub attempts / 15 min
1.1
Form & résumé
76%
UFC win rate
62%
-1
Win/loss streak
-1
60%
Last-5 win rate
40%
38%
Finish rate
88%
Recent opp. quality
259
Days since last fight
343
Recent form (last 5 UFC)
Aljamain Sterling
  • LMovsar EvloevU-DEC R3
    Close +1929mo before
  • WCalvin KattarU-DEC R3
    Close -1881y 4mo before
  • LSean O'MalleyKO/TKO R2
    Close -2582y before
  • WHenry CejudoS-DEC R5
    Close -1012y 4mo before
  • WTJ DillashawKO/TKO R2
    Close -1772y 10mo before
Brian Ortega
  • LDiego LopesU-DEC R3
    Close +17011mo before
  • WYair RodriguezSUB R3
    Close +1361y 6mo before
  • LYair RodriguezKO/TKO R1
    Close -1863y 1mo before
  • LAlexander VolkanovskiU-DEC R5
    Close +1543y 11mo before
  • WChan Sung JungU-DEC R5
    Close +1604y 10mo before
Sterling — win / loss by method
Record: 24-5-0

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
3 wins, 2 losses
W
13% of wins
L
40% of losses
Submission
8 wins, 0 losses
W
33% of wins
L
0% of losses
Decision
12 wins, 3 losses
W
50% of wins
L
60% of losses
DQ / other
1 win, 0 losses
W
4% of wins
L
0% of losses
UFC
16win5loss0draw0NC
WinsLosses
2 (13%)KO/TKO(40%) 2
4 (25%)Submission(0%) 0
9 (56%)Decision(60%) 3
1 (6%)DQ / other(0%) 0
Non-UFC
8win0loss0draw0NC
WinsLosses
1 (13%)KO/TKO() 0
4 (50%)Submission() 0
3 (38%)Decision() 0
Ortega — win / loss by method
Record: 16-4-0, 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
3 wins, 2 losses
W
19% of wins
L
50% of losses
Submission
8 wins, 0 losses
W
50% of wins
L
0% of losses
Decision
5 wins, 2 losses
W
31% of wins
L
50% of losses
UFC
8win4loss0draw1NC
WinsLosses
3 (38%)KO/TKO(50%) 2
4 (50%)Submission(0%) 0
1 (13%)Decision(50%) 2
Non-UFC
8win0loss0draw0NC
WinsLosses
0 (0%)KO/TKO() 0
4 (50%)Submission() 0
4 (50%)Decision() 0

Profiles

Experience
Sterling
Ortega
21
UFC fights
13
280.7 min · 13.4 avg
Octagon time
168.3 min · 12.9 avg
15y 3m
Career length
16y 3m
UFC schedule strength

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

Sterling
Ortega
373W–67L · 84.8%
Overall
247W–65L · 79.2%
277W–49L · 85.0%
Wins
164W–52L · 75.9%
96W–18L · 84.2%
Losses
83W–13L · 86.5%
Non-UFC schedule strength
Sterling
Ortega
34W–17L · 66.7%
Overall
30W–23L · 56.6%
34W–17L · 66.7%
Wins
30W–23L · 56.6%
0W–0L
Losses
0W–0L
Distance striking
Sterling
Ortega
6.60
Landed / min
4.64
45.1%
Accuracy
35.6%
63.0%
Defense
51.3%
0.00
Knockdowns / 15 min
0.45
44.0%
Time at distance
77.2%
Grappling & control
Sterling
Ortega
2.51
Takedowns / 15 min
1.07
29.9%
Takedown accuracy
26.1%
42.6%
Takedown defense
55.6%
0.69
Sub attempts / 15 min
1.07
63.9%
Control share
47.6%
Strike target map
Sterling
  • Head49%(601)div 64%
  • Body33%(410)div 19%
  • Legs18%(226)div 17%
Ortega
  • Head72%(498)div 64%
  • Body17%(116)div 19%
  • Legs11%(73)div 17%

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

Aljamain Sterling
CloseSSTDKDCtrl

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

Brian Ortega
CloseSSTDKDCtrl

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