NRL | Round 23

alphr.com.au

DOL
Dolphins
VS
SYD
Roosters
SUNCORP STADIUM, BRISBANE • SATURDAY 9 AUG, 5:30 PM

Win Probability

AI Game Review

Roosters defied the model's 56% prediction for Dolphins, a notable result. The margin model missed here, predicting 0.6 but the actual margin was 52 points. The game's 76 points came in 38 points higher than the predicted 38. Roosters led 6–36 at the break and pulled away in the second half to win by 52. A tough result for the model, all 3 picks missed on this one.

Model vs actual outcomes • Post-match analysis

🏁

AI Referee Insights

Gerard Sutton officiated this match (367 career games). The combined score of 76 points was 34 points above Gerard Sutton's career average of 42. Roosters's victory aligns with Gerard Sutton's historical trend, Roosters have a 54% win rate under this referee. Despite Gerard Sutton's 56% career home-team win rate, the away side Roosters prevailed. 61% of his career sin bins go against away teams, a statistically significant away-team bias.

Based on referee career statistics • Post-match analysis

Momentum Replay
Beta
80', Roosters firmly in control (99%)
DOL12
1%80'99%
64ROO
HT100%50%0%0'20'40'60'80'
Roosters momentumMomentum +9Dolphins momentum →
Next Try (within 10 min)
AI Model
92% none
DOL 4%No try 92%ROO 4%
Biggest Swings

AI Win Probability

56%DolphinsFavourite

Dolphins

56%

Roosters

44%

AI Match Overview

Dolphins hold the advantage at 56% win probability, though Roosters are far from out of this at 44%. The model sees Dolphins ahead on 6 of 7 key factors including ELO Difference, Forward Pack and Backline Quality. Dolphins carry a 59-point ELO rating advantage (1588 vs 1529). Recent form favours Dolphins with 3 wins from their last 5 compared to 2 for Roosters.

Generated from model features • Pre-kick-off analysis

Edge Analysis

3 ACTIVE EDGES

Each market is predicted by an independent model, H2H, margin, and totals may occasionally disagree.

H2H Recommendation

Dolphins to Win @1.95

Lost ✗

Edge

+6.9%

Line / Spread

Dolphins +1.5 @1.91

Lost ✗

Edge

+6.9%

Total Points

Under 48.5 @1.91

Lost ✗

Edge

+27.2%

Form & History

TeamLast 5Avg Pts
Dolphins
W
W
W
L
L
29.0
Roosters
W
W
L
L
L
25.4

Avg Conceded

24.0

Dolphins

24.6

Roosters

Avg Margin

5.0

Dolphins

0.8

Roosters

Run Metres

1846

Dolphins

1498

Roosters

Line Breaks

7.0

Dolphins

3.0

Roosters

Referee Indicator

Favours Roosters

Gerard Sutton

367 career games · since 2011

AI Analysis

Win rate when Gerard Sutton refs each team (vs any opponent)

Dolphins
5W – 8L
38%
Roosters
32W – 27L
54%

When Gerard Sutton officiates, Roosters have won 32 of 59 games (54%), significantly stronger than Dolphins's 5 from 13 (38%). Home teams win 56% of his matches (vs ~52% league avg).

Avg Total

42.0 pts

Home Win %

56%

Home Bias

Leans home

Penalty & Discipline

Pen / Game

11.8

Sin Bins / Gm

0.12

SB Away %

61%

Avg Penalties Per Game

vs Home Teams5.7
vs Away Teams6.1

Penalty Advantage Under This Ref

Positive = opponent penalised more than your team

Dolphins
+0.0
Roosters
-2.1

Dolphins get a +0.0 penalty advantage under Gerard Sutton vs Roosters's -2.1. 61% of his 18 career sin bins go to away teams.

H2H History (Last 4)Roosters lead 3-1
May 2025DOL 26 - 36 SYD
Aug 2024DOL 34 - 40 SYD
Aug 2023DOL 14 - 30 SYD
Mar 2023DOL 28 - 18 SYD
Prediction BreakdownPure Alpha Model

📊Team ELO Ratings

DOL
1588Overall1529
SYD
ELO difference: +59 in favour of Dolphins

🏈Positional Matchups

Player ELO aggregated by position group, higher = stronger unit

1138Forwards1129
Best: 1289EvenBest: 1244
1020Backs963
Best: 1158DOL +57Best: 1000
1213Halves1202
Best: 1213DOL +12Best: 1202
1200Hooker811
DOL +389

📈Recent Form (Last 5)

DOL
Stat
SYD
3.0
Wins (Last 5)
2.0
29.0pts
Avg Score
25.4pts
24.0pts
Avg Conceded
24.6pts
5.0pts
Avg Margin
0.8pts
1845.6m
Run Metres
1497.6m
7.0
Line Breaks
3.0
361.0
Tackles
364.0
9.0
Errors
13.0

🔑Key Prediction Factors

What the model weighted most in this prediction

1
ELO Difference14.0%
Dolphins
2
Forward Pack12.0%
Dolphins
3
Backline Quality10.0%
Dolphins
4
Halves Control9.0%
Roosters
5
Recent Win Rate9.0%
Dolphins
6
Referee Tendency7.0%
Dolphins
7
Venue Advantage7.0%
Dolphins

Model Confidence

56%

Dolphins predicted to win by 1 points

Predicted total: 38 · Line: +0.6

0/3 match predictions correct
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