NRL | Round 4

alphr.com.au

SYD
Roosters
VS
GLD
Titans
ALLIANZ STADIUM, SYDNEY • FRIDAY 28 MAR, 6:00 PM

Win Probability

AI Game Review

Titans defied the model's 61% prediction for Roosters, a notable upset. The margin model missed here, predicting 6.1 but the actual margin was 18 points. Total score prediction of 46 was close to the actual 42, within 4 points. The model went 1/3 on this match. The under 50.5 total call was correct.

Model vs actual outcomes • Post-match analysis

🏁

AI Referee Insights

Grant Atkins officiated this match (318 career games). The 42-point combined total was right in line with Grant Atkins's career average of 43. Titans bucked the trend, Roosters historically win 63% of games under Grant Atkins, but couldn't convert that edge today. 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', Titans firmly in control (99%)
ROO12
1%80'99%
30TIT
HT100%50%0%0'20'40'60'80'
Titans momentumMomentum -40Roosters momentum →
Next Try (within 10 min)
AI Model
88% none
ROO 6%No try 88%TIT 6%
Biggest Swings

AI Win Probability

61%RoostersFavourite

Roosters

61%

Titans

39%

AI Match Overview

Roosters hold the advantage at 61% win probability, though Titans are far from out of this at 39%. The model sees Roosters ahead on 6 of 7 key factors including ELO Difference, Forward Pack and Backline Quality. Roosters carry a 76-point ELO rating advantage (1503 vs 1427). Recent form favours Roosters with 2 wins from their last 5 compared to 1 for Titans. The margin model predicts Roosters by 6.1 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 @1.55

Lost ✗

Edge

-5.6%

Line / Spread

Roosters -4.5 @1.91

Lost ✗

Edge

-5.6%

Total Points

Under 50.5 @1.91

Winner ✓

Edge

+12.6%

Form & History

TeamLast 5Avg Pts
Roosters
W
W
L
L
L
23.2
Titans
W
L
L
L
L
19.6

Avg Conceded

32.0

Roosters

29.6

Titans

Avg Margin

-8.8

Roosters

-10.0

Titans

Run Metres

1528

Roosters

1642

Titans

Line Breaks

5.6

Roosters

3.8

Titans

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%
Titans
10W – 22L
31%

When Grant Atkins officiates, Roosters have won 35 of 56 games (63%), significantly stronger than Titans's 10 from 32 (31%).

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
Titans
+0.0

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 5-0
May 2026SYD 28 - 12 GLD
Sep 2024SYD 48 - 22 GLD
Aug 2023SYD 36 - 18 GLD
May 2022SYD 44 - 16 GLD
Sep 2021SYD 25 - 24 GLD
Prediction BreakdownPure Alpha Model

📊Team ELO Ratings

SYD
1503Overall1427
GLD
ELO difference: +76 in favour of Roosters

🏈Positional Matchups

Player ELO aggregated by position group, higher = stronger unit

1141Forwards1000
Best: 1314SYD +140Best: 1248
1022Backs904
Best: 1119SYD +118Best: 1004
1203Halves1093
Best: 1203SYD +110Best: 1093
1200Hooker858
SYD +342

📈Recent Form (Last 5)

SYD
Stat
GLD
2.0
Wins (Last 5)
1.0
23.2pts
Avg Score
19.6pts
32.0pts
Avg Conceded
29.6pts
-8.8pts
Avg Margin
-10.0pts
1527.8m
Run Metres
1642.0m
5.6
Line Breaks
3.8
356.2
Tackles
339.0
10.2
Errors
12.2

🔑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

61%

Roosters predicted to win by 6 points

Predicted total: 46 · Line: +6.1

1/3 match predictions correct
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