BJ, you are right when you say that it shouldnt make any difference if your next bet is the next race or another three weeks later, however speaking from personal experience my profit margin (if there is one) always deteriorates asthe day goes by. The reason I put it down to is that my concentration levels probably deteriorate as the day goes by and therefore I am more succeptible to making bad decisions. If I was following a system then it obviously would not make a difference, however if you are looking at things on a race by race basis, then I think people lose concentration as time goes by, in my opinion.