Best odds guaranteed/Rule 4 question?

[skylark2009]

How do the bookies calculate the returns when there are non runners after the bet has been placed and the winners odds drift out to a bigger price from when the bet was placed? I.e Does best odds guaranteed override any rule 4's that should be applied because of non runners? I've just been checking my betting history with Boylesport and Paddy Power trying to find out why I've got slightly more in my accounts when compared to my records. A number of bets that I've placed have been returned at best odds guaranteed where there are obvious non runners and a rule 4 should/could have been applied but hasn't. I've been applying rule 4's automatically to my records and until now, couldn't figure out why these discrepancies were happening.:( It seems that best odds guaranteed has an additional benefit where there are non runners and the odds drift out to a bigger price for the winner.

[Cowan]

Re: Best odds guaranteed/Rule 4 question? I noticed this too. Rule 4 doesn't seem to apply.