This really happens to my friend in a horse racing, he is making a good run of winning he was in a winner take all bet and he needs to only win one, before he buys a ticket a winner take all-ticket, he has doubt on his bet on the 7th race because he is not the main favorite, he opted for the favorite of race 7
He wins bet on all the 6 races and he just needs one win and he is confident that the horse who he picks for a replacement on the horse he first bet to win the race, in the end, he loses the big jackpot in the 7th race because the horse that comes out the winner happens to be the horse he replaced with the favorite, he loses $3000 jackpot because of that.
He had a hard time moving on with that experience.
You friend is very good horse racing tipster.6/7 fantastic result
I had many that kind of cases.I have been changing my initial bet and lost because of that
i cause frustration sure but in a case of your friend it is good for him to focus on his great six wins instead of crying of one lost.Horse racing betting has to bring fun it is not only about money
And life is goes on so there are next races