Terps what they do is place bets at a track with a small handle, this changes the payout pools. Then they bet the horses the truely like at offshore places which don't effect the pools, Therefore they are able to manipulate the odds. The other day a daily double that should have probably paid about 15$, paid 70$.
How could there be that significant of a difference in payout? These guys would have to be betting big at the track to influence an entire pool
It could be easily done if the track has a really low handle and the os bettor is betting big.
for easy math purposes , say the track has 5k in the daily double pool and there are 5 winning tickets , each ticket would pay 1k , so if you made a 100$ double bet off shore you dont effect the odds. ... but if you made that bet at the track there would now be 5100 in the pool with 55 winning tickets knocking the payout down to about 90 bucks.
...BUT , its still not a fool proof system as many times they will win the decoy bet at the track and lose their os bet , and many times they lose both.
In the movie THE GRIFTERS , Angelica Huston plays a character who works for a bookie that
takes horse bets.
The bookie pays track odds and takes a lot of longshot money.
Since this money doen not go into the pari mutual pool, there is
lots of liability if certain horses come in.
Her job is to go to the track and bet money on longshots so that the odds on
them get lowered and also it helps offset some of the losses should those longshots come in.
THis is related to what these pool manipulators do, except she was doing if FOR the bookmaker.
PS. This is a kick ass movie if you enjoys movies about conmen and gambling.