Duval: Troon's back 9 most difficult in Open rota
July 13, 2016
2001 Open champion David Duval says Royal Troon's back nine may be the most difficult in the rota.
Video: British Open 2016: David Duval Royal Troon analysis
2001 Open champion David Duval says Royal Troon's back nine may be the most difficult in the rota.
