Tough test aheadpublished at 12:35 British Summer Time 9 October 2016
Standing in Andy Murray's way this afternoon is Grigor Dimitrov.
It's the British number one who holds the advantage in the head-to-head stakes as he leads the Bulgarian 7-3, having most recently beaten him in straight sets at last month's US Open.
Before that, though, Murray did lose to Dimitrov at the Miami Open earlier this year. In fact, Dimitrov has claimed some pretty big scalps in 2016, beating Stan Wawrinka at the Western & Southern Open and Rafael Nadal in the quarter-finals of this tournament.
Murray can't afford to underestimate him, that's for sure.