Relative Probability

The sport of kings.
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rubysglory
Posts: 309
Joined: Thu Nov 04, 2010 7:02 am

Hi All.

I am looking for stats on the relative win probability of Betfair SP Vs Actual Win ratio. Plenty of Stats available on the web using Bookmaker SP vs Win ratio available but I have come up nought on betfair SP stats. It is my observation that between 1.60 and 2.00 their is a narrow window where the win rate of a horse is higher than their price suggests although I have nothing concrete over the longer term to back that up. Anybody seem such or something to add?

Rgds
rg
spreadbetting
Posts: 3140
Joined: Sun Jan 31, 2010 8:06 pm

All the BSP history data files are at http://promo.betfair.com/betfairsp/prices/ shouldn't be hard to run your own queries as the files include won/lost data as well as SP
Iron
Posts: 6793
Joined: Fri Dec 11, 2009 10:51 pm

You might also be interested in this article (written by Peter Webb):

http://www.probabilitytheory.info/conte ... ge-markets

Jeff
spreadbetting wrote:All the BSP history data files are at http://promo.betfair.com/betfairsp/prices/ shouldn't be hard to run your own queries as the files include won/lost data as well as SP
rubysglory
Posts: 309
Joined: Thu Nov 04, 2010 7:02 am

Thanks.

Both links very educational.

rg
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