NRL | Round 18

alphr.com.au

SYD
Roosters
VS
WST
Wests Tigers
ALLIANZ STADIUM, SYDNEY • SUNDAY 6 JULY, 2:00 PM

Win Probability

AI Game Review

Wests Tigers defied the model's 69% prediction for Roosters, a notable upset. The predicted margin of 7.6 was reasonable against the actual 2-point result. A tough result for the model, all 3 picks missed on this one.

Model vs actual outcomes • Post-match analysis

🏁

AI Referee Insights

Peter Gough officiated this match (183 career games). The combined score of 58 points was 14 points above Peter Gough's career average of 44. Wests Tigers bucked the trend, Roosters historically win 50% of games under Peter Gough, but couldn't convert that edge today. Peter Gough averaged 13.1 penalties per game heading in, a whistle-heavy referee profile.

Based on referee career statistics • Post-match analysis

Momentum Replay
Beta
80', Wests Tigers firmly in control (99%)
ROO28
1%80'99%
30WES
HT100%50%0%0'20'40'60'80'
Wests Tigers momentumMomentum +16Roosters momentum →
Next Try (within 10 min)
AI Model
90% none
ROO 5%No try 90%WES 5%
Biggest Swings

AI Win Probability

69%RoostersFavourite

Roosters

69%

Wests Tigers

31%

AI Match Overview

Roosters are clear favourites here at 69%, with our model expecting a comfortable victory over Wests Tigers. The model sees Roosters ahead on 6 of 7 key factors including ELO Difference, Forward Pack and Backline Quality. Roosters carry a 267-point ELO rating advantage (1566 vs 1299). Recent form favours Roosters with 3 wins from their last 5 compared to 0 for Wests Tigers. The margin model predicts Roosters by 7.6 points with a combined total of 47.

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 @1.20

Lost ✗

Edge

-10.1%

Line / Spread

Roosters -12.5 @1.91

Lost ✗

Edge

-10.1%

Total Points

Under 49.5 @1.91

Lost ✗

Edge

+6.0%

Form & History

TeamLast 5Avg Pts
Roosters
W
W
W
L
L
28.0
Wests Tigers
L
L
L
L
L
15.2

Avg Conceded

16.4

Roosters

23.2

Wests Tigers

Avg Margin

11.6

Roosters

-8.0

Wests Tigers

Run Metres

1728

Roosters

1749

Wests Tigers

Line Breaks

4.6

Roosters

4.4

Wests Tigers

Referee Indicator

Favours Roosters

Peter Gough

183 career games · since 2016

AI Analysis

Win rate when Peter Gough refs each team (vs any opponent)

Roosters
8W – 8L
50%
Wests Tigers
9W – 16L
36%

Roosters hold a 14-point edge: 8W–8L (50%) vs Wests Tigers's 9W–16L (36%).

Avg Total

44.2 pts

Home Win %

53%

Home Bias

Leans home

Penalty & Discipline

Pen / Game

13.1

Sin Bins / Gm

0.43

SB Away %

60%

Avg Penalties Per Game

vs Home Teams6.1
vs Away Teams7

Penalty Advantage Under This Ref

Positive = opponent penalised more than your team

Roosters
-0.2
Wests Tigers
+1.0

Peter Gough averages 13.1 penalties per game, above the league norm. Expect frequent stoppages. Penalises away teams more, 6.1 against home vs 7 against away. Wests Tigers get a +1.0 penalty advantage under Peter Gough vs Roosters's -0.2.

H2H History (Last 5)Roosters lead 5-0
Jul 2024SYD 40 - 6 WST
Sep 2023SYD 32 - 8 WST
Aug 2022SYD 72 - 6 WST
Mar 2021SYD 40 - 6 WST
Jun 2020SYD 38 - 16 WST
Prediction BreakdownPure Alpha Model

📊Team ELO Ratings

SYD
1566Overall1299
WST
ELO difference: +267 in favour of Roosters

🏈Positional Matchups

Player ELO aggregated by position group, higher = stronger unit

1039Forwards1037
Best: 1273EvenBest: 1273
1022Backs869
Best: 1142SYD +153Best: 983
1370Halves1260
Best: 1370SYD +110Best: 1260
1192Hooker600
SYD +592

📈Recent Form (Last 5)

SYD
Stat
WST
3.0
Wins (Last 5)
0.0
28.0pts
Avg Score
15.2pts
16.4pts
Avg Conceded
23.2pts
11.6pts
Avg Margin
-8.0pts
1727.6m
Run Metres
1749.4m
4.6
Line Breaks
4.4
375.8
Tackles
367.2
13.4
Errors
11.6

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

Model Confidence

69%

Roosters predicted to win by 8 points

Predicted total: 47 · Line: +7.6

0/3 match predictions correct
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