5
This reminds me of a race back in NZ like 35 years ago.
There was a maiden horse that had finished 10th or worse on 5 consecutive occasions. The horse happened to be named The Trump. His trainer was staying at Robert Cameron's farm (Cameron was a top driver who even won a WDC) Cameron trained a few and he told the trainer, leave him with me, I will get him to win a race. Two weeks later he was in to go and would have been like 50 to 1. Cameron told my trainer he was going to win and to bet on him, which we did.
He was a lazy horse, and they came to the top of the stretch, and he was a length in front, Bob gave him a haymaker and he went two lengths clear, then another, three clear and so on until he won by 6. He was hauled before the judges and fine $500 for the red marks on the horse's ass end. I mentioned to him after the race, "U didn't have to hit him that hard did you" and he said, when the money is on, you have to, he was going to stop. He ended up being 5-1 and lined a few pockets.
The funny thing was he ran the following week against winners of 1 and ran away from the field and won by 5 without being whipped once. I guess that hammering he got woke him up. He won at 12-1 and not one of us, including his driver, bet him.