Exchanges risk

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Exchanges risk

Sun Apr 14, 2013 3:22 pm

Hello.
I have sometimes found risky situations, mostly on Betfair. I think it is because some players try to take advantage of other players' mistakes.
The situation is the following:
- I find an back/lay arbitrage between bet365 and betfair
- I go to bet365 and see the match, market and back odds (seems OK)
- I go to betfair and see the match, market and lay odds (seems OK too).
However the lay odds are placed on the wrong option.

In a recent example:
Almagro vs Isner, first set winner.
Bet365: 3.25 for Isner
Betfair: 2.94 against Isner
That's a 3.35% arbitrage (or 2.15% considering BF's commission).
But when I check Betfair, the 2.94 are against Almagro.

If someone is not careful, he might place the bet to back Isner on Bet365 and lay Almagro on Betfair and could lose both bets.

I am attaching a picture with three screen shots with this situation.
I happens very often.

Why and how does this happen? Are players on Betfair placing bets, cancelling and placing again on the other option?
Why do alert services keep showing the alert? (I think if a BF player does this, he must cancel the first bet immediately, or it will be matched.
Did anyone have a problem with this?
Did anyone use this to take advantage?
Attachments
BF risks lowres.jpg
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arbusers
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Re: Exchanges risk

Sun Apr 14, 2013 5:11 pm

I was also doing this kind of tricks many years ago when betfair started, now it doesn't worth it.
ami5
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Re: Exchanges risk

Thu May 02, 2013 3:44 pm

Yes I must confess, I paid someone about 70 eiros that way, it was small bet but anyway I it hurt.
Noticed it before game but usually this happens on markets that are not liquid, so no chance to get out of bet.
Now all you can do lose part of second checking  for this kind of thing.

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