Britain's Andy Murray has revealed that a self-administered pep-talk in a courtside toilet helped him to end his long wait for Grand Slam success at last year's US Open.

Murray had lost his first four Grand Slam finals and appeared set for more heartache after squandering a two-set lead against Serbia's Novak Djokovic at Flushing Meadows in September last year.

However, he says a timely toilet break between the fourth and fifth sets enabled him to get his challenge for the trophy back on track.