I have done it myself Sportz tried to put $10 e/w on a horse but being an idiot and not checking gone and put in $50 or something like that in there or put the wrong numbers on when they have gotten up with the ones I thought I would have had. very disappointing and it is the only thing I worry about when putting bets on at home on the net account made to many mistakes and more often than not it has cost me.