2011 Grand Final: Good 'Ol Collingwood?


The Pies have spent most of this week on the TAB doing what handwritten correspondence and nuanced political debate has been doing over the past few decades: going slowly out of favour.

The Pies have spent most of this week on the TAB doing what handwritten correspondence and nuanced political debate has been doing over the past few decades: going slowly out of favour.
The 2011 Grand Final will, for the only time during which MARS Ratings have been calculated, pit two teams that are each rated over 1,050.
Some will, I'm sure, disagree but on MARS Ratings the Eagles will now finish the season in 6th, with Carlton in 4th and St Kilda in 5th. That's the upshot of this week's Preliminary Final results, which saw the Cats snatch 2.7 Ratings Points from the Eagles and Collingwood, despite winning, surrender 0.8 Ratings Points to the Hawks, such was the unexpected narrowness of their victory.
It was a close-run thing as far as the Pies are concerned, but we've wound up with the Grand Final that the pundits and the MARS Ratings have been suggesting we'd have for some time.
By combining the Flag prices we're seeing on the TAB for the four teams with the prices for each of the four possible Grand Final pairings that we're also seeing there, and by assuming that the overround embedded in each price within a market is the same, we can mathematically derive the probabilities that the TAB bookmaker must logically hold for every possible GF result.