Keegan Bradley, who last won a major at the 2011 PGA Championship, has issued a telling warning to his fellow Americans who sit atop the PGA Tour rankings.

Xander Schauffele has withdrawn from The American Express - the PGA Tour event that he was set to be the favorite for - after Scottie Scheffler had already pulled out

Xander Schauffele, the world's number two ranked player, surprisingly withdrew from The American Express on Monday.