Amber Guzzler
Norm Smith Medallist
Hmmm... All this irrelevant talk of probability. The results over the last 10 years clearly show that there's a flaw in your calculations. Consider this: You know that a when you toss a coin, it's a 50/50 chance of being heads/tails (well, close enough). However, if you toss a particular coin X number of times, and always get a ratio of say 70/30 for heads, regardless of how many times you toss it, you'll sooner or later come to the realisation that the coin isn't balanced, and is weighted such that head has an advantage over tails.It's true that the calculations assume all matches are 50-50.
So, if Collingwood mathematiclaly has an 18.75% chance of winning the flag, it is a mathematical fact that on Qualifying Final day they are playing to increase or decrease their chances by only 6.25%
If they win the QF, their chances will go up 6.25%, and if they lose it will go down by 6.25%. Hardly anything.
But yes, not all matches are 50-50. Lets suppose that upon winning the Qualifying Final, the week off means Collingwood are a 70% chance of winning the Prelim (lets still say the GF is 50%). This means their chances of winning the flag are 35% (0.70 x 0.50)
And if Collingwood lose the QF, their chance of winning the semi-final is 80% (the loser of the QF nearly always wins the Semi-Final), and in that sceanrio lets say they then have a 40% chance of winning the Prelim Final because they'd be playing a team with a weeks rest. And the Grand Final is 50-50. So if they lose the Qualifying Final their chances of winning the flag would be 16% (0.8 x 0.4 x 0.5)
So using these new calculations, Collingwood's 18.75% chance can increase to 35% if they win the Qualifying Final, but it decreases to only 16% if they lose the Qualifying Final.
So, if they lose the Qualifying Final their chances drop from 18.75% to 16%... hardly anything. That is based on the fact that if they lose the QF, they are almost certain to win the next week (I've said 80% certain.)
So, really, if you lose the Qualifying Final, you are hardly any worse off than what you were at the start of the finals series.
That's why the OUTCOME of losing in a double chance final is not exciting at all. The match itself is exciting. The contest is exciting. The prospect of two great teams head-to-head is exciting. But the actual outcome itself is not.
I've said it before and I'll say it again: The public's favourite matches are the Grand Final and Preliminary Finals because the season is on the line. These matches represent the true ideology of what finals are about - performing on the day.
It's the same with finals matches. All your calculations are based on the fact that 2 teams playing a particular finals match both have a 50/50 chance of winning that match, yet the results over the last 10 years suggest that this is not the case at all. Out of the 20 Qualifying finals played under the current system, 15 of them have been won by the top 2 teams, and only 5 have been won by teams 3 and 4. You theory doesn't fit the results.






