Thomas Bjorn, Henrik Stenson and Richard Green, three leading figures on the European Tour, are united in their view that golf is free of doping.

The trio, speaking after the admission by American cyclist Lance Armstrong that he cheated his way to his seven Tour de France wins, believe their own sport is clean when it comes to performance-enhancing drugs.

"I would find it very surprising if we encountered any enhancing drugs in golf," two-time former Ryder Cup player Stenson said