Peadar McCoy admitted he felt like crying after seeing his son Tony drive Mountain Tunes home at Towcester to record the 4,000th winner of his career over jumps.
It was an extra special moment for the rider, with his family in attendance, as well his boss JP McManus, in whose colours he achieved the landmark figure on a horse sent off the 6-4 favourite.
Paedar McCoy, a joiner by trade but who kept a few horses as a "hobby" when McCoy was growing up, said: "It's a great day, I feel like crying.
"It couldn't have gone better, the way he won it wasn't easy but it was great.
"It looked like he was going to get beat but he pulled it out of the bag, him and the horse.
"He can still sleep as well as ever, nothing bothers him.
"He got a great reception when he went to Northern Ireland at Down Royal the other day, it was brilliant.
"I'm very proud."