Collin Morikawa has flatly dismissed talk that he could join the exodus from the PGA Tour to the LIV Golf Invitational Series.

The Open champion and former US PGA winner had been linked in some reports as a player that might switch allegiance, but the 25-year-old American said that simply is not true.

Morikawa, who finished tied for fifth place at the U.S. Open last week, issued his denial on Twitter.

He wrote: "Last week at my press conference, I said the media loves creating drama. Sure enough, I woke up this morning to everyone thinking I'm next. Not to say I told you so but…I told you so.

"To state for the record, once again, you all are absolutely wrong. I've said it since February at Riviera that I'm here to stay on the @PGATOUR and nothing has changed. Now if you'll excuse me, I've got some cereal to pour in my milk."

The Saudi Arabia-backed breakaway competition, which started earlier in June in London, has already drawn major-winning big names including Phil Mickelson, Dustin Johnson and Sergio Garcia.

Bryson DeChambeau and Patrick Reed followed suit to play in LIV Golf tournaments, with all participants aware they would be indefinitely suspended from the PGA Tour.

The 'rebel' players were still allowed to play the U.S. Open, where four-time major winner Brooks Koepka said he was "tired of conversations", arguing LIV Golf debates were "throwing a black cloud" over the third major of 2022.

Now Koepka is said to have agreed a switch to LIV Golf, where players have been richly rewarded for agreeing to join the series, although he has yet to confirm the move.

Widespread reports have said Koepka will play the 54-hole tournament in Portland, Oregon, that runs from June 30 to July 2.