Phil Mickelson finished second to Koepka in The Match – an event created to raise money for former PGA Tour players fighting cancer
US Open champion Brooks Koepka says he “just wanted to spank” Bryson DeChambeau after beating the fellow American in “The Match”.
Koepka, 26, beat DeChambeau in a best-of-18, final-hole playoff to win the inaugural celebrity tournament in California.
“I told (DeChambeau) I was not going to lose. I just wanted to spank him,” said Koepka, who beat Anthony Kim in the final on Sunday.
“I was tired and it was fun. I really hope he learns from this.”
Koepka also revealed he paid his partner and little league team more than $1,000 (£719) for a football game with DeChambeau.
He added: “I said, ‘You can make this (even) a bigger story than it already is’.
“He played a complete game. I’m going to make sure he continues to play really well. I don’t know why he’s always expecting me to beat him by 20 shots. I just wish he would just be competitive.”
Koepka won $1.9m (£1.4m) for his victory, with DeChambeau taking home $1.5m (£1.2m).
Six celebrities including Paris Hilton, Rip Taylor and Sean Combs took part in the golf event at the Shadow Creek Golf Club, Las Vegas.
Cristiano Ronaldo and (right) Cristiano’s Real Madrid team-mate Julen Lopetegui coached Spain during the match
The prize for the team that won was donated to LPGA Tour player Kim’s foundation and the winner took home $200,000 (£151,376).
Kim, who represented both the USA and Canada in golf, was diagnosed with cancer in 2006 and is now a motivational speaker.
The event, which was created to raise money for charities that help former PGA Tour players, has been described as “the first competition of its kind”.