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Pythago NRL

Rugby league Elo models, player ratings and statistics

Tag: nrl

NRL Tips – Round 8, 2017

Round 8 does not offer too many difficult to judge matchups. For example, the two bottom teams are facing off against two in the top eight. Probably the most interesting game features the current ladder leaders, St George Illawarra, facing off against fourth placed Sydney City – their first real test of the season. Penrith might be able… Read More NRL Tips – Round 8, 2017

April 20, 2017April 29, 2017 pythagonrl

Primer – How does the Collated Ladder work?

The Collated Ladder takes in two inputs: The projected number of wins for each club from the Stocky The projected number of wins for each club from Pythagorean expectations Put simply, the Collated Ladder is an average of these two numbers, with a 2:1 weighting towards the output of the Stocky, rounded to the nearest… Read More Primer – How does the Collated Ladder work?

April 19, 2017January 14, 2018 pythagonrl

NRL Projections Update – Round 7, 2017

Given that round 7 didn’t finish until Monday night, I couldn’t get the updated projections out until they’d actually finished playing. Being Tuesday, we’ll skip the updated ratings post and will do the same again next week when the projections update will come out Tuesday night after the ANZAC Day games. This week though, we… Read More NRL Projections Update – Round 7, 2017

April 18, 2017April 29, 2017 pythagonrl

NRL Tips – Round 7, 2017

Some interesting matchups this round. The usually highly fancied Cowboys are facing off against the Dragons and the guys with the early form, the Sea Eagles, are taking on the Storm, who are probably looking to right the wrongs of a poor performance against the Sharks. At the other end of the ladder, the Tigers-Eels game… Read More NRL Tips – Round 7, 2017

April 13, 2017April 29, 2017 pythagonrl

NRL ELO Ratings Update – Round 6, 2017

As in round 5, the winners went up and the losers went down in all systems. The Raiders, Dragons, Sharks and the Storm are the highest rated teams, by varying leads and in different orders depending on the system. Amongst the biggest, less obvious losers are the Cowboys (now down 57 points in Euclid since… Read More NRL ELO Ratings Update – Round 6, 2017

April 11, 2017April 20, 2017 pythagonrl

NRL Projections Update – Round 6, 2017

A couple of really, really big upsets in this week’s mix with the Sharks bringing the Storm’s unbeaten run to an end and the Tigers throwing the form guide out the window and taking down a lacklustre Cowboys outfit. The Dragons now top the table, matching the Storm’s 5-1 record. It’s very tight still with… Read More NRL Projections Update – Round 6, 2017

April 10, 2017April 29, 2017 pythagonrl

NRL Tips – Round 6, 2017

I am very skeptical that anything good can come of tipping from the ELO models and my record this year is testament to that. Before I get into it, I’d like to reiterate that I am no expert. Plainly. “Success” Eratos is, contrary to all common sense, showing the way forward this year. I, on… Read More NRL Tips – Round 6, 2017

April 6, 2017April 29, 2017 pythagonrl

Primer – What variables do the Elo models use?

In my previous primer on Elo ratings, I talked about different ways of calculating Elo ratings with a view of measuring form and/or class. This primer will look in a bit more depth at how I arrived at the specific numbers for the variables. The main variables in an Elo model are: Starting ratings (discrete… Read More Primer – What variables do the Elo models use?

April 5, 2017January 14, 2018 pythagonrl

NRL ELO Ratings Update – Round 5, 2017

Part of the regular posting will include weekly updates on the ELO model ratings coming out of Euclid (best predictor), Archimedes (short term form) and Eratosthenes (long term class). If you want Thales or Hipparchus, you only have to ask. Unlike the Projections, I’m not sure I’ll bother going back to do rounds 1-4. Here they… Read More NRL ELO Ratings Update – Round 5, 2017

April 4, 2017April 20, 2017 pythagonrl

NRL Projections Update – Round 5, 2017

It’s taken a while longer than I thought to get this going but here we are with the first post projecting the future of the 2017 season. The projections will be updated after each round on Monday. Round 5 Results  Canterbury 10 (2-3) d  Brisbane 7 (2-3)  Manly 18 (3-2) d  Sydney 12 (4-1)  North Queensland 20 (4-1)… Read More NRL Projections Update – Round 5, 2017

April 3, 2017April 29, 2017 pythagonrl

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