Bryson DeChambeau downs WINE from US Open trophy with Donald Trump's son, Eric - and gets a video message from the former President!

READ: Rory McIlroy breaks silence on disastrous US Open collapseREAD: Why Rory McIlroy will NOT be defined forever by US Open choke

Bryson DeChambeau celebrated his US Open triumph with the Trump family at their Westchester National Golf Club on Monday night.

The former President sent DeChambeau a message of congratulations after he won the US Open for the second time in his career at the weekend - which is also his second career Major win - before things seemed to get boozy.

'You have it all, you have the long ball and everything else,' Trump said in a short video shared to Instagram by his attorney, Alina Habba.

Trump can also be heard quoting someone in the clip who had told him DeChambeau could be compared to the golfing great, Arnold Palmer.

DeChambeau was greeted by Eric Trump at the golf course, and the celebrations soon appeared to take a more boozy turn.

Bryson DeChambeau poured red wine into the US Open trophy - with help from Eric Trump

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Trump held the trophy while DeChambeau poured red wine into it. With a crowd watching on, Trump calls out: 'Now that's a full trophy, ladies and gentleman.'

DeChambeau then takes hold of the trophy and tells the crowd of onlookers 'this is unbelievable' before taking several big gulps of wine.

The 30-year-old DeChambeau won a stunning $4.3million for his victory on Sunday - which will always be remembered for the manner of Rory McIlroy's collapse on the closing holes.

McIlroy bogeyed three of the last five, with two putts from a combined range of seven feet, blowing up his two-shot lead and allowing DeChambeau to claim glory.

Trump also posted a message of congratulations to DeChambeau on Monday, writing: 'Congratulations to Bryson DeChambeau on his incredible WIN of the United States Open!

'He showed a toughness and inner strength, matched perfectly with his GREAT Golfing Talent, that can never be denied! Under massive pressure, he pulled off some of the greatest shots ever made, especially his spectacular sand save on the 18th Hole that gave him the Victory.

'"Mr. 58" has always been a WINNER, and will go on to many more Major Championships. He is a truly tough competitor, even a nasty one, but he also happens to be a great guy. The U.S.A. could not be better represented.

'Congratulations also to LIV Golf for their genius in signing Bryson and other of the best Golfers in the World.

'Hopefully Golf will soon come together as one, fully united, which is the way it should be!'