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turtleshead
24 Apr 11 11:19
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Date Joined: 01 Jan 05
| Topic/replies: 11,372 | Blogger: turtleshead's blog
In a 3 outcome event with no liquidity, I have asked to back C at 2.1. Straight away, my bet appears as an offer to back B at 1.9.

1) As the price should 1.909, does the person taking it by backing option B get the exact odds automatically?

2) If someone does back B, as well as my bet being matched on C, do Betfair get a risk free win if option A occurs?

Thanks for any opinions.

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Replies: 62
By:
Contrarian
When: 24 Apr 11 11:26
1. Person backing option B at 1.9 gets 1.9.

2. Yes, Betfair get risk-free profit.

They have been skimming markets like this for a couple of years now.
By:
Feck N. Eejit
When: 24 Apr 11 11:26
No & Yes.
By:
Eddie the eagle
When: 24 Apr 11 11:28
Not sure about 1) , but 2) wont happen as the other bet disappear when one is taken. It's just you or your counterpart that gets very bad value.
By:
Eddie the eagle
When: 24 Apr 11 11:30
Sorry, forget my post. I misunderstood.
By:
turtleshead
When: 24 Apr 11 11:35
Thanks! Looks like Betfair must be making a fortune out of these then. Plain
By:
Contrarian
When: 24 Apr 11 11:39
It's another case of Betfair shifting from a pure 'exchange' into a standard bookmaker role. (Although technically BF has always been a bookmaker, this isn't how it was originally conceived by its creators).
By:
turtleshead
When: 24 Apr 11 11:49
Except for the fact that bookmakers take a risk.
By:
The Management
When: 24 Apr 11 12:13
Careful fellas - in my experience it is possible to lose your forum access for questioning the cross matching!
By:
turtleshead
When: 24 Apr 11 12:26
On what basis?

Could someone please inform me which forum rule has been broken on this thread, because I can't find one!
By:
The Management
When: 24 Apr 11 13:03
I don't think I broke one either - hence reinstated (after some debate).
By:
The Management
When: 24 Apr 11 13:05
My question was along these lines.....

BF have reassured us that cross matching is best execution (for the customer), I was wondering how they made any money from it if it was "best execution"? The two do not seem compatible imo.
By:
The Investor
When: 24 Apr 11 13:23
Yes, Betfair can legitimately claim 'best execution', as it is not possible to back or lay at odds increments that don't exist.

If an over/under markets looks like this:

under 6.5 - 1.01 1.02
over  6.5 - 60   65

And someone backs under 6.5 at 1.01, it was never possible for them to back this outcome at 1.0156 instead.

If you see backing under 6.5 and laying over 6.5 as two distinct bets (which they are), Betfair offer best execution.

Of course, for all practical purposes they are identical, and only the price differs.

It's not just losers that are giving up value by cross matching. If the market is

1.11 1.12
9.8  10

I may well back at 1.11 instead of taking the 10 under certain circumstances.
By:
blank
When: 24 Apr 11 15:18
They give the skimmed money back on Australian markets

As part of the cross-matching process, Betfair uses an internal account which acts as a counterparty to the bets being cross-matched. The cross-matching process may result in a small amount of residual funds remaining in the internal account in some instances. This residual may occur because Betfair only matches customer bets at discrete odds intervals.

Any residual funds that accumulate in this internal counterparty account as a result of the operation of cross-matching on Australian markets will be provided back to customers through future events involving cross-matching markets, in a manner that is approved by the Tasmanian Gaming Commission.
By:
brendanuk1
When: 24 Apr 11 15:30
They need to explicitly state in Australian markets thats its on in the market aswell.

Wonder why uk is so laissez faire Confused
By:
Feck N. Eejit
When: 24 Apr 11 15:55
Not ripping Brits off isn't the done thing.
By:
turtleshead
When: 24 Apr 11 16:08
So the British punter gets ripped off but the Austrialian one can't, that sounds fair. Plain

Anyone from Betfair like to comment Confused
By:
Alex the old wrinkled retainer
When: 24 Apr 11 16:09
Well spotted blank, I completely missed that. I wonder how the money is "provided back", or  will be "provided back".
By:
Alex the old wrinkled retainer
When: 24 Apr 11 16:19
Cross matching has been active on Aussie wallet markets for a while now and there must be a lot in the skimmed money pot.  Form an orderly in the queue for the dash for cash when Tasmanians decide please.
By:
stewarty b
When: 24 Apr 11 16:44
This cross matching malarkey, is it akin to Betfair seeding the markets? (Imay be well off the mark btw)
By:
Feck N. Eejit
When: 24 Apr 11 16:58
I would say you were off the mark stewarty. In fact I'd say cross matching was the only good thing that's come out of betfair towers in the last 10 years.
By:
The Investor
When: 24 Apr 11 17:04
with regard to australia, why don't they just give the price taker the converted price?

That's what they should be doing all round.
By:
askari1
When: 24 Apr 11 17:06
blank, I didn't know they were under an obligation to return the breakage from Australian markets to punters.

This very shady practice of skimming shows why bf whd be regulated by the FSA in Britain. Bf has a lot of professional customers whose level of expertise is at least the equal of at-home spread bettors or people investing their personal wealth--but customers get fobbed off w/ the Gambling Commission, who do not appear to be staffed by bettors or people who think like winning bettors (esp. on the bookmaking side).


There may be times when cross-matching speeds market clearing but imv that isn't sufficient compensation for being skimmed.
By:
Feck N. Eejit
When: 24 Apr 11 17:15
Has anyone ever seen betfair & the GC in the same room?
By:
askari1
When: 24 Apr 11 17:15
The Investor, they will come up w/ some rubbish about their ladder being their ladder. No matter than bf SP does not round up (or more likely round down) to ladder odds.

Just to stress, my prob. is not w/ the legality of their skimming or w/ some idea that they shd operate as an exchange. I wd be very happy for them to book-make to provide liquidity.

It's more w/ the way they said nothing about the change, aren't following the implicit principle of 'best execution' and can give themselves eye-wateringly generous 'the field against two' bets on underpopulated markets (conceivably the latter stages of IR horses). I only go IR if I've made a mistake, but I'm sure an IR player will be able to say how often this happens.
By:
Feck N. Eejit
When: 24 Apr 11 17:16
On occasions betfair must be guilty of trapping.
By:
askari1
When: 24 Apr 11 17:19
feck, wasn't there some discussion something like 4 yrs ago of bf being regulated by the FSA (i.e. not the Gambling Commission)? Do you know the ins and outs of how they escaped this?

It is not plausible that a body that oversees whether the balls in the National Lottery are all the same size will also have the skill-set to police bf's thousands of events and derivative markets per day.
By:
askari1
When: 24 Apr 11 17:22
On occasions betfair must be guilty of trapping.

Or something that has the same effect, merely through the operations of an automatic and not mindful overround-eliminating bot.

I can see that part of their motivation is to remove parasitical overround-skimmers from their markets, but imv they shd have taken 'best execution' at the letter in doing so.
By:
Feck N. Eejit
When: 24 Apr 11 17:28
I don't recall such a discussion askari but the Salvation Army would be more savvy than the GC.
By:
stewarty b
When: 24 Apr 11 18:24
Thanks for that Feck. I'll have to remain ignorant as to cross matching. However, I did tell you the story a while back about me not getting matched backing 3 horses within the space of a minute and the prices disapeared, in the same race....
By:
stewarty b
When: 24 Apr 11 18:25
*disappeared
By:
Feck N. Eejit
When: 24 Apr 11 18:32
I remember that stewarty. That probably was to do with the cross matcher.
By:
stewarty b
When: 24 Apr 11 18:38
Probably Feck, however, I've very seldom had problems getting a bet matched if I'm laying a beast. Maybe a touch of paranoia.
By:
stewarty b
When: 24 Apr 11 19:11
Just as a matter of interest Feck, are you back punting on the flat or do you still refuse to pay the PC charge? Peronally, I haven't had a bet since the 18th of March. (the suicidal run was becoming a joke)
By:
TheVis
When: 24 Apr 11 21:36
Do you think the cross matcher has led to more money being matched on fallers at 1000?  The figure often goes up quite significantly during the race after one is down, especially if a fancied horse falls early.  I wonder if BF are profiting from that somehow via their skimming/ability to have skinners against the field?
By:
viva el presidente!
When: 24 Apr 11 22:27
would be so easy for betfair to give the skimmed money back and brand it as a "betfair bonus". unless they want to quietly hang on to it (which blank's link suggests they don't), they're missing a trick not doing so.
By:
viva el presidente!
When: 24 Apr 11 22:28
would be so easy for betfair to give the skimmed money back and brand it as a "betfair bonus". unless they want to quietly hang on to it (which blank's link suggests they don't), they're missing a trick not doing so.
By:
viva el presidente!
When: 24 Apr 11 22:28
oops - double tap.
By:
Feck N. Eejit
When: 25 Apr 11 09:25
stewarty, I'll probably be back this June, more out of boredom than anything else. I've kinda fell out of love with horse racing and the path betfair have chosen to go down. The pc was never likely to affect me once they changed to basing it on lifetime profit.
By:
The Management
When: 25 Apr 11 11:12
The Investor     24 Apr 11 13:23 
Yes, Betfair can legitimately claim 'best execution', as it is not possible to back or lay at odds increments that don't exist.


This is perfectly possible, they do it every day with the Betfair Starting Price on about 80% of all runners in most horse races.

Similarly with the example you gave above (1.0156) - this price exists - it's just the same as getting about half your stake matched at 1.01 and the other half at 1.02. Every price exists and could be utilised if the reassurance bout "best execution" were true.
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