View Full Version : Forcast
Micky T
19th June 2006, 20:03
In the results it shows a figure for straight forcast and tricast what level stake is this to.
GlosRFC
19th June 2006, 20:27
£1
Micky T
19th June 2006, 20:38
Thanks Glos I thought it was but wasn't certain.
Micky T
20th June 2006, 14:50
Right next question
it will cost £2 to do a reverse forcast and £6 for a reverse tricast is that correct
It is early days but a dutching system i am testing had 6 races on sunday with 2 forcast wins and 1 tricast, yesterday 6 races with 2 forcast and 1 tricast :yikes: :yikes:
Yesterdays tricast does not show on the results page how do i work out the winnings they had odds of 2.5, 2.37, 13
GlosRFC
20th June 2006, 20:46
That's correct...a reverse forecast is 2 bets - A & B or B & A, while a combination tricast is 6 bets - A & B & C or A & C & B or B & A & C or B & C & A or C & A & B or C & B & A.
Unfortunately you can't calculate the return from the odds as the final payout is calculated against a number of criteria including the stature of the race, type of race, number of runners. Multipyling the odds can give you a close approximation but it can still vary wildly...I suspect because of the numbers of runners in a race. If you do a search on this site for tricasts, I posted details of how it's worked out but to get an accurate figure you'll need to check the return online or in the paper.
GlosRFC
20th June 2006, 23:02
Hmmm....looks like my old post was eaten some time ago but I've managed to find the gist of it here:
Muliplying the SPs doesn't work for the bookmakers because the SP is calculated on who is going to win the race, not who is going to come second and third. The place odds (1/4 and 1/5th) take care of that. So they devised a complicated formula that adjusts the SP price for the second and third-placed horses in a Tricast bet. The adjustments are:
An over-round is calculated on the race (ie the bookies' profit percentage, usually 2% per horse) based on a price for the horses that come second and third. It's as if the actual winner wasn't in the race at all.
The size of the field is taken into account and effectively is a further increase in the bookmakers' margin of profit to compensate them for the risk of two, over-priced, horses coming first, second and third.
Then another adjustment is made to reflect the weight of betting so that the over-round is consistent with the bookmakers' expectations of profit on the race. So now there are effectively four separate betting books - one each for the three horses the bookmakers expect to occupy the first three places, and the fourth book covering the remaining, higher-priced and therefore less-backed, horses.
Anther adjustment takes account of the type of race. The Association of British Bookmakers have noticed that there are different patterns of results between flat races, hurdles and chases. This adjustment takes into account races that don't follow these patterns and which therefore don't follow the expected 'logic' of the market prices.
In 1997 a limitation calculation was introduced to further protect bookmakers' losses when the favourite won.
Minor adjustments are made to this formula each year and a copy of it is available by writing to:
Association of British Bookmakers Ltd
Regency House
1-4 Warwick Street
London W1B 5LT
Tel: 020 7434 2111
Hope that's useful Ooo
Micky T
21st June 2006, 13:16
Thanks for that.
I have found out that the payout for that race was not there because it was not a handicap, I did not know you could only have a tricast in handicap races :doh :doh :doh
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