Britain and Ireland's hopes at the Walker Cup at Royal County Down this September have taken a blow as Richie Ramsay has decided to go professional.
Ramsay with the 2006 American Amateur Championship trophy
The 24-year-old from Aberdeen, who last year became the first Briton since 1911 to win America's amateur championship, makes his debut at the Russian Open.
"I had a great amateur experience and am grateful to everyone who supported me," he said.
"Now I want to go out and see what I can achieve as a pro."
Ramsay's success in America earned him invitations to the Masters, US Open and Open.
In Augusta he played alongside defending champion Phil Mickelson, and at the US Open he played two rounds with Tiger Woods.
He will be joining the International Management Group, which already looks after Woods, new Open champion Padraig Harrington and Colin Montgomerie.