NRL | Round 19

alphr.com.au

SGI
Dragons
VS
SYD
Roosters
JUBILEE STADIUM, SYDNEY • SATURDAY 12 JULY, 5:30 PM

Win Probability

AI Game Review

Our model correctly predicted Roosters to win at 58% probability. The predicted margin of 2.5 was reasonable against the actual 7-point result. The model went 2/3 on this match. The 1-12 margin band call landed.

Model vs actual outcomes • Post-match analysis

🏁

AI Referee Insights

Grant Atkins officiated this match (318 career games). The combined score of 55 points was 12 points above 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%)
DRA24
1%80'99%
31ROO
HT100%50%0%0'20'40'60'80'
Roosters momentumMomentum -28Dragons momentum →
Next Try (within 10 min)
AI Model
92% none
DRA 4%No try 92%ROO 4%
Biggest Swings

AI Win Probability

58%RoostersFavourite

Dragons

42%

Roosters

58%

AI Match Overview

Roosters hold the advantage at 58% win probability, though Dragons are far from out of this at 42%. The model sees Roosters ahead on 5 of 7 key factors including ELO Difference, Forward Pack and Backline Quality. Roosters carry a 136-point ELO rating advantage (1530 vs 1395). Recent form favours Roosters with 3 wins from their last 5 compared to 2 for Dragons. The margin model predicts Roosters by 2.5 points with a combined total of 46.

Generated from model features • Pre-kick-off analysis

Edge Analysis

1 ACTIVE EDGE

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

H2H Recommendation

Roosters to Win @1.50

Winner ✓

Edge

-7.5%

Line / Spread

Roosters +5.5 @1.91

Winner ✓

Edge

-7.5%

Total Points

Under 47.5 @1.91

Lost ✗

Edge

+4.2%

Form & History

TeamLast 5Avg Pts
Dragons
W
W
L
L
L
20.4
Roosters
W
W
W
L
L
29.6

Avg Conceded

28.0

Dragons

17.6

Roosters

Avg Margin

-7.6

Dragons

12.0

Roosters

Run Metres

1594

Dragons

1731

Roosters

Line Breaks

3.8

Dragons

5.0

Roosters

Referee Indicator

Favours Roosters

Grant Atkins

318 career games · since 2013

AI Analysis

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

Dragons
15W – 23L
39%
Roosters
35W – 21L
63%

When Grant Atkins officiates, Roosters have won 35 of 56 games (63%), significantly stronger than Dragons's 15 from 38 (39%).

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

Dragons
-0.2
Roosters
+0.3

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)Roosters lead 4-1
Apr 2026SGI 16 - 62 SYD
Apr 2025SGI 18 - 46 SYD
Jul 2024SGI 12 - 42 SYD
Apr 2024SGI 18 - 60 SYD
May 2023SGI 24 - 22 SYD
Prediction BreakdownPure Alpha Model

📊Team ELO Ratings

SGI
1395Overall1530
SYD
ELO difference: -136 in favour of Roosters

🏈Positional Matchups

Player ELO aggregated by position group, higher = stronger unit

1085Forwards1193
Best: 1269SYD +109Best: 1361
1049Backs1134
Best: 1134SYD +86Best: 1200
1100Halves1140
Best: 1100SYD +40Best: 1140
1085Hooker1219
SYD +134

📈Recent Form (Last 5)

SGI
Stat
SYD
2.0
Wins (Last 5)
3.0
20.4pts
Avg Score
29.6pts
28.0pts
Avg Conceded
17.6pts
-7.6pts
Avg Margin
12.0pts
1594.0m
Run Metres
1730.6m
3.8
Line Breaks
5.0
375.4
Tackles
382.0
10.6
Errors
12.4

🔑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%
Roosters
4
Halves Control9.0%
Roosters
5
Recent Win Rate9.0%
Roosters
6
Referee Tendency7.0%
7
Venue Advantage7.0%
Dragons

Model Confidence

58%

Roosters predicted to win by 2 points

Predicted total: 46 · Line: -2.5

2/3 match predictions correct
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