Andy Murray strolls into US Open quarter-finals

Andy Murray is through to the quarter-finals of the US Open after beating Grigor Dimitrov in straight sets.

The world number two produced a flawless performance at the Arthur Ashe Stadium, thrashing the Bulgarian 6-1 6-2 6-2.

Murray has now reached the last eight in 22 out of his last 23 grand slams.

He will face Japan's sixth seed Kei Nishikori for a place in the semi-finals.