Phil Mickelson and Henrik Stenson pull clear at Troon

Phil Mickelson and Henrik Stenson were threatening to turn the 145th Open Championship into their own private duel as Rory McIlroy's patience snapped along with his three wood.

Mickelson had seen his one-shot lead at Royal Troon quickly overturned despite making a birdie on the third, playing partner Stenson picking up shots on three of the first four holes.