DeChambeau and Johnson deliver new blows to Saudi-backed breakaway tour

• Americans say they are committed to PGA Tour
• Greg Norman's plans now in serious doubt

Potentially fatal blows to Saudi Arabia's hopes of presiding over a breakaway tour have been delivered by Bryson DeChambeau and Dustin Johnson, who have both committed to golf's existing ecosystem.

Until now DeChambeau had been by far the most high-profile player linked with the Saudi scheme. But on Sunday he said: While there has been a lot of speculation surrounding my support for another tour, I want to make it very clear that as long as the best players in the world are playing on the PGA Tour, so will I."