June 8, 2021

Rugby Premiership Predictions for Round 22

Team Ratings for Round 22

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
Exeter Chiefs 10.11 7.35 2.80
Bristol 5.49 1.28 4.20
Sale Sharks 5.44 4.96 0.50
Harlequins 1.95 -1.08 3.00
Northampton Saints -0.48 -2.48 2.00
Wasps -1.21 5.66 -6.90
Gloucester -2.57 -1.02 -1.50
Bath -3.08 2.14 -5.20
Leicester Tigers -3.44 -6.14 2.70
London Irish -7.17 -8.05 0.90
Newcastle Falcons -8.32 -10.00 1.70
Worcester Warriors -9.80 -5.71 -4.10

 

Performance So Far

So far there have been 118 matches played, 80 of which were correctly predicted, a success rate of 67.8%.
Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Sale Sharks vs. Harlequins Jun 05 45 – 12 5.30 TRUE
2 Leicester Tigers vs. Bristol Jun 06 23 – 26 -4.70 TRUE
3 London Irish vs. Wasps Jun 06 36 – 39 -1.20 TRUE
4 Newcastle Falcons vs. Worcester Warriors Jun 06 24 – 14 5.40 TRUE
5 Northampton Saints vs. Exeter Chiefs Jun 07 26 – 29 -6.70 TRUE

 

Predictions for Round 22

Here are the predictions for Round 22. 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 Bath vs. Northampton Saints Jun 13 Bath 1.90
2 Bristol vs. London Irish Jun 13 Bristol 17.20
3 Exeter Chiefs vs. Sale Sharks Jun 13 Exeter Chiefs 9.20
4 Harlequins vs. Newcastle Falcons Jun 13 Harlequins 14.80
5 Wasps vs. Leicester Tigers Jun 13 Wasps 6.70
6 Worcester Warriors vs. Gloucester Jun 13 Gloucester -2.70

 

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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 »