Tag Archives: sports

The young forwards are not to blame for the Broncos’ demise

To not put too fine a point on it, the Broncos have been shockingly bad in 2019. Riding the hype train in this year, they were touted as premiership contenders (disclosure: including by me).

The Broncos have won just two games. One was against a Cowboys side that is facing similar struggles and another against a Sharks team bereft of its star power. The other six games have been losses, ranging from a late field goal from Corey Norman sealing the win for the Dragons, to thirty-two point demolitions at the hands of Easts and then again from Souths.

The finger pointing has begun. The Broncos’ extremely youthful pack has come in for criticism, both for a lack of go-forward and a lack of consistency.

The statistics tell a different story.

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Are the Warriors the most inconsistent team in the NRL?

Despite being set an 18 point line, the Warriors managed to run the Storm close on ANZAC Day in Melbourne. Were it not for a dubious decision or two in the closing phase of the game, the Aucklanders might have left AAMI Park with the win. That led to people, including me, wondering out loud via social media where that level of play had come from, especially compared to some of the Warriors’ earlier displays this season.

Some people suggested the Warriors in Melbourne was a Thing. We only need to remember last year’s 50-10 drubbing to dispel that but also recall that the Warriors have a 7-13-1 record in Melbourne, with an average margin of thirteen points in the Storm’s favour.

So what gives?

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A glance at the NRL with Poseidon ratings

If you read my tips for round 1, you would have seen the Poseidon rating making an appearance. The purpose of the Poseidon rating system is to look at each team’s offensive and defensive capabilities separately, as well as their home and away performance, to see if their winning record is concealing strengths or weaknesses.

The underlying principle is quite simple. We look at how many tries a team scores, at home and away, and how many they conceded, similarly at home and away, and see how that stacks up against the league average over the previous twenty-four rounds.

The league average moves over time. In 2013, the home team scored 3.9 tries on average and the away team 3.2. In 2018, those numbers had changed to 3.6 and 3.1 respectively. While 0.3 tries per game may not seem like much, over a 192 game regular season schedule, that’s 57 tries that have gone missing, or about 316 points, just for the home teams.

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Primer – Poseidon ratings

Poseidon ratings are a new team rating system for both the NRL and the Queensland Cup.

For those who don’t have time to read 2000+ words, here’s the short version: the purpose of Poseidon ratings is to assess the offensive and defensive capabilities of rugby league teams in terms of the number of tries they score and concede against the league average. By using these ratings, we can estimate how many tries will be scored/conceded in specific match ups and then use that, with probability distributions, to calculate an expected score, margin and winning probabilities for the match-up.

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What’s new in 2019

I had meant to do some wrap-up posts after I got back from my honeymoon but it felt like the moment had passed, being two or three weeks after the grand final, and I didn’t have much to say other than the navel gazing stuff that people really don’t care about it.

This tweet sums up the 2018 season on the blog pretty well though:

This post is about some of the stuff that’s changed and what’s a work in progress but mostly to let you know that we are indeed in business in 2019.

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Gauging the 2018 State of Origin teams – Game I

For the first time in a long time, it looks like we may have a well balanced Origin season. Indeed, the balance may even be a little Blue for my liking but when three of the last generation’s four best players retire from representative football, and they all happened to play for the same state, then the scales will shift perceptibly.

By now, you would know who’s playing for both Queensland and New South Wales in the first of rugby league’s three biggest games. You might even have formed an opinion as to which side is looking the goods. Consensus seems to have settled on this being the Blues’ year. But why settle for the thoughts of experts who have spent the last forty-eight hours tweeting out the leaked Blues lineup, when I’ve crunched the numbers for you?

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