When the Low Scorer Wins

One aspect of the unusual predictability of this year's AFL results has gone - at least to my knowledge - unremarked.

That aspect is the extent to which the week's low-scoring team has been the team receiving the most points start on Sportsbet. Following this strategy would have been successful in six of the last eight rounds, albeit that in one of those rounds there were joint low-scorers and, in another, there were two teams both receiving the most start.

The table below provides the detail and also shows the teams that Chi and ELO would have predicted as the low scorers (proxied by the team they selected to lose by the biggest margin). Correct predictions are shaded dark grey. "Half right" predictions - where there's a joint prediction, one of which is correct, or a joint low-scorer, one of which was predicted - are shaded light grey.

To put the BKB performance in context, here's the data for seasons 2006 to 2009.

All of which might appear to amount to not much until you understand that Sportsbet fields a market on the round's lowest scorer. So we should keep an eye on this phenomenon in subsequent weeks to see if the apparent lift in the predictability of the low scorer is a statistical anomaly or something more permanent and exploitable. In fact, there might still be a market opportunity even if historical rates of predictiveness prevail, provided the average payoff is high enough.

ELO Projected Ladder II

The last three weeks has had quite an effect on ELO's projected end of season ladder, as you can see in the table below.

The top 3 positions are unchanged, firmly held by the Cats, Saints and Dogs, but there's significant movement amongst the next 8.

Carlton moves from the fringes of the top 8 into 4th, dethroning the Pies who drop to 6th. The Lions and Sydney - both now projected to win two more games than thought previously - move into the top 8 at the expense of the two Adelaide teams, who both now miss out on a finals spot based on (my proxy of) percentages.

Making the final 8 now requires 11 wins, which is more in keeping with seasons past than the 10 wins that were projected previously. Also, the teams that make up the projected final 8 are the same teams that currently occupy the top 8 teams on the competition ladder.

Positions 11 through 16 are all held by the same teams as in the earlier projections, albeit that there's been some interesting but inconsequential rearrangements. Unrearranged though is Melbourne, now projected to lose all of its remaining games.