October 5, 2021

Rugby Premiership Predictions for Round 4

Team Ratings for Round 4

The basic method is described on my Department home page.
Here are the team ratings prior to this week’s games, along with the ratings at the start of the season.

Current Rating Rating at Season Start Difference
Wasps 6.39 5.66 0.70
Exeter Chiefs 6.09 7.35 -1.30
Sale Sharks 3.37 4.96 -1.60
Bath 1.31 2.14 -0.80
Harlequins -0.87 -1.08 0.20
Bristol -1.06 1.28 -2.30
Northampton Saints -1.63 -2.48 0.90
Gloucester -1.87 -1.02 -0.80
Newcastle Falcons -2.51 -3.52 1.00
Saracens -3.41 -5.00 1.60
Leicester Tigers -4.40 -6.14 1.70
Worcester Warriors -5.68 -5.71 0.00
London Irish -7.35 -8.05 0.70

 

Performance So Far

So far there have been 18 matches played, 8 of which were correctly predicted, a success rate of 44.4%.
Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Bristol vs. Bath Oct 02 25 – 20 1.60 TRUE
2 Northampton Saints vs. London Irish Oct 02 23 – 21 11.30 TRUE
3 Leicester Tigers vs. Saracens Oct 03 13 – 12 4.00 TRUE
4 Newcastle Falcons vs. Wasps Oct 03 18 – 14 -5.50 FALSE
5 Worcester Warriors vs. Gloucester Oct 03 23 – 31 1.80 FALSE
6 Sale Sharks vs. Exeter Chiefs Oct 04 15 – 25 3.20 FALSE

 

Predictions for Round 4

Here are the predictions for Round 4. The prediction is my estimated expected points difference with a positive margin being a win to the home team, and a negative margin a win to the away team.

Game Date Winner Prediction
1 Harlequins vs. Bristol Oct 09 Harlequins 4.70
2 Exeter Chiefs vs. Worcester Warriors Oct 10 Exeter Chiefs 16.30
3 Gloucester vs. Sale Sharks Oct 10 Sale Sharks -0.70
4 London Irish vs. Leicester Tigers Oct 10 London Irish 1.50
5 Saracens vs. Newcastle Falcons Oct 10 Saracens 3.60
6 Wasps vs. Northampton Saints Oct 11 Wasps 12.50

 

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David Scott obtained a BA and PhD from the Australian National University and then commenced his university teaching career at La Trobe University in 1972. He has taught at La Trobe University, the University of Sheffield, Bond University and Colorado State University, joining the University of Auckland, based at Tamaki Campus, in mid-1995. He has been Head of Department at La Trobe University, Acting Dean and Associate Dean (Academic) at Bond University, and Associate Director of the Centre for Quality Management and Data Analysis at Bond University with responsibility for Short Courses. He was Head of the Department of Statistics in 2000, and is a past President of the New Zealand Statistical Assocation. See all posts by David Scott »