Prem Round 6 Predictions + Force Velocity Update

Grant Beasley · October 20, 2021

Welcome to Round 6 predictions from the Elo rating system. Firstly a quick update on the force-velocity dashboard that I posted about last week.

Force Velocity Update

So I had a few questions about how to use the dashboard and realised some of the caveats were only mentioned if the reader visited this link. Here are the requirements for the csv file if you want to be able to use the dashboard:

  • The field delimiter should be a semicolon ‘;’ and delete any column headers.
  • The csv should have 5 columns. The app only reads the time (in seconds) and velocity columns, however these should be the first and third columns of the csv respectively. It was built to handle a csv with these columns ['time', 'data', 'velocity','lat', 'lon'] but as long as it has time and velocity in the correct position, it’ll work OK (in theory!).
  • Don’t trim the sprints in your GPS software so that it stops at the top speed. The app extracts the peaks in the GPS trace so it needs the accel and the decel phase to extract the info.
  • The filename should be in the format ‘{firstname_surname}-{bodyweight in kg}-{date}.csv’ for example ‘john_smith-96-20211020.csv’

Hopefully that will resolve any issues anybody had.

Elo Ratings Round 6

So not a bad week for the Elo system last week. 4 matches predicted correctly, Sale throwing a spanner in the works by beating Quins and then a draw. Let’s see what the Elo ratings look like after round 5:

Team After Round 4 After Round 5
Exeter 1643 1668
Leicester 1649 1667
Saracens 1632 1665
Harlequins 1697 1646
Sale 1566 1616
Newcastle Falcons 1469 1503
Northampton 1500 1500
Wasps 1522 1497
Gloucester 1483 1483
Bristol 1442 1408
Bath 1374 1341
London Irish 1282 1282
Worcester 1272 1255

And the predictions for this week are:

elo.predict_fixture('NORTHAMPTON', 'WORCESTER', teams)
>>> Northampton win = 85%
>>> Worcester win = 15%

elo.predict_fixture('EXETER', 'LONDON IRISH', teams)
>>> Exeter win = 92%
>>> London Irish win = 8%

elo.predict_fixture('GLOUCESTER', 'NEWCASTLE FALCONS', teams)
>>> Gloucester win = 54%
>>> Newcastle Falcons win = 46%

elo.predict_fixture('HARLEQUINS', 'BATH', teams)
>>> Harlequins win = 89%
>>> Bath win = 11%

elo.predict_fixture('LEICESTER', 'SALE', teams)
>>> Leicester win = 64%
>>> Sale win = 36%

elo.predict_fixture('SARACENS', 'WASPS', teams)
>>> Saracens win = 78%
>>> Wasps win = 22%

Looks like it could be close ones for Gloucester/Falcons and Leicester/Sale and I doubt Bath fans will be looking forward to facing Quins after last weekends results. The bookies have got similar odds with:

  • Northampton/Worcester with Saints at 1/8
  • Chiefs/Irish with Exeter at 1/11
  • Gloucester/Falcons with Gloucester at 4/9
  • Quins/Bath with Quins at 1/8
  • Leicester/Sale with Tigers at 3/8 compared to our 3/5
  • Big odds on a home win for Sarries with the bookies having them at 1/20. The Elo system isn’t quite giving such extreme odds but it’s difficult to see Sarries losing at home.

Another week in and the Elo ratings table is starting to reflect this seasons form a bit better. Bath are being saved from being rock bottom of the Elo ratings by the virtue of a few of the close losses they had earlier in the season although on their current form they won’t be moving up without some big upsets!

Twitter, Facebook