NRL | Round 24

alphr.com.au

SYD
Roosters
VS
CBY
Bulldogs
ALLIANZ STADIUM, SYDNEY • FRIDAY 15 AUG, 8:00 PM

Win Probability

AI Game Review

Our model correctly predicted Roosters to win at 54% probability. The margin model missed here, predicting 1.2 but the actual margin was 20 points. Total score prediction of 43 was close to the actual 44, within 1 points. Roosters led 14–6 at the break and pulled away in the second half to win by 20. The model went 2/3 on this match. The over 42.5 total call was correct.

Model vs actual outcomes • Post-match analysis

🏁

AI Referee Insights

Grant Atkins officiated this match (318 career games). The 44-point combined total was right in line with Grant Atkins's career average of 43. Roosters's victory aligns with Grant Atkins's historical trend, Roosters have a 63% win rate under this referee. Grant Atkins averaged 14.4 penalties per game heading in, a whistle-heavy referee profile.

Based on referee career statistics • Post-match analysis

Momentum Replay
Beta
80', Roosters firmly in control (99%)
ROO32
99%80'1%
12BUL
HT100%50%0%0'20'40'60'80'
Bulldogs momentumMomentum +22Roosters momentum →
Next Try (within 10 min)
AI Model
92% none
ROO 5%No try 92%BUL 3%
Biggest Swings

AI Win Probability

54%RoostersFavourite

Roosters

54%

Bulldogs

46%

AI Match Overview

Roosters hold the advantage at 54% win probability, though Bulldogs are far from out of this at 46%. The model sees Roosters ahead on 4 of 7 key factors including ELO Difference, Forward Pack and Halves Control. Recent form favours Bulldogs with 4 wins from their last 5 compared to 3 for Roosters. The margin model predicts Bulldogs by 1.2 points with a combined total of 43.

Generated from model features • Pre-kick-off analysis

Edge Analysis

2 ACTIVE EDGES

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

H2H Recommendation

Roosters to Win @2.20

Winner ✓

Edge

+4.8%

Line / Spread

Bulldogs +2.5 @1.91

Lost ✗

Edge

+4.8%

Total Points

Over 42.5 @1.91

Winner ✓

Edge

-1.1%

Form & History

TeamLast 5Avg Pts
Roosters
W
W
W
L
L
32.6
Bulldogs
W
W
W
W
L
24.0

Avg Conceded

21.0

Roosters

14.4

Bulldogs

Avg Margin

11.6

Roosters

9.6

Bulldogs

Run Metres

1514

Roosters

1696

Bulldogs

Line Breaks

3.8

Roosters

5.8

Bulldogs

Referee Indicator

Favours Roosters

Grant Atkins

318 career games · since 2013

AI Analysis

Win rate when Grant Atkins refs each team (vs any opponent)

Roosters
35W – 21L
63%
Bulldogs
16W – 18L
47%

When Grant Atkins officiates, Roosters have won 35 of 56 games (63%), significantly stronger than Bulldogs's 16 from 34 (47%).

Avg Total

43.2 pts

Home Win %

54%

Home Bias

Leans home

Penalty & Discipline

Pen / Game

14.4

Sin Bins / Gm

0.29

SB Away %

56%

Avg Penalties Per Game

vs Home Teams6.8
vs Away Teams7.6

Penalty Advantage Under This Ref

Positive = opponent penalised more than your team

Roosters
+0.3
Bulldogs
+0.6

Grant Atkins averages 14.4 penalties per game, above the league norm. Expect frequent stoppages. Penalises away teams more, 6.8 against home vs 7.6 against away.

H2H History (Last 5)Bulldogs lead 3-2
May 2025SYD 20 - 24 CBY
Jun 2024SYD 26 - 8 CBY
Apr 2024SYD 26 - 30 CBY
Jun 2023SYD 25 - 24 CBY
Apr 2022SYD 12 - 16 CBY
Prediction BreakdownPure Alpha Model

ELO–Market Disagreement

Roosters hold the ELO advantage (1601 vs 1581), but the market favours Bulldogs (@1.83).

The model sides with ELO, Roosters predicted to win despite longer odds.

📊Team ELO Ratings

SYD
1601Overall1581
CBY
ELO difference: +20 in favour of Roosters

🏈Positional Matchups

Player ELO aggregated by position group, higher = stronger unit

1125Forwards1047
Best: 1301SYD +78Best: 1222
1097Backs1150
Best: 1149CBY +53Best: 1255
1285Halves1107
Best: 1285SYD +179Best: 1107
839Hooker967
CBY +128

📈Recent Form (Last 5)

SYD
Stat
CBY
3.0
Wins (Last 5)
4.0
32.6pts
Avg Score
24.0pts
21.0pts
Avg Conceded
14.4pts
11.6pts
Avg Margin
9.6pts
1514.2m
Run Metres
1696.0m
3.8
Line Breaks
5.8
345.8
Tackles
343.8
12.4
Errors
10.6

🔑Key Prediction Factors

What the model weighted most in this prediction

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

Model Confidence

54%

Roosters predicted to win by 1 points

Predicted total: 43 · Line: -1.2

2/3 match predictions correct
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