Thanks for your replies everyone.
An example of what I mean occured Mon 18th(using vic tab fav)
Wellington R4 No5 Brisk Crown $2.60 next race
Cessnock R6 No1 Main Game $3.20 next race
Horsham R6 No5 Three Kings $2.80

3 winners in a row. This sequence has occured 11 times up to the 17th of this month from about 646 favs. I suspect its as chrome said.

Chrome or jfc I would like to discuss this further with regards to an ill thought out staking plan, let me know on this thread if your interested.

cheers