Andy Murray returns to action for the first time since his Wimbledon exit as he takes on promising Australian teenager Nick Kyrgios in the second-round of the Toronto Masters.
The British No 1 has not played since he saw his hopes of defending his Wimbledon title dashed in a straight-sets quarter-final humbling to Bulgarian Grigor Dimitrov.
And Kyrgios, who made his name by knocking out 14-time grand slam champion Rafael Nadal and Frenchman Richard Gasquet on his unlikely march into the Wimbledon quarter-finals, will prove a major test for the Scot.
The prodigious talent of the lanky 19-year-old from Canberra was on show on Tuesday when he backed up his growing big-match reputation with his 94-minute victory over the experienced Colombian Santiago Giraldo 7-6 (7-3) 7-5 to set up a meeting with Murray.
Kyrgios played fearless tennis as he trailed Giraldo 5-2 in the opening set, with the wild card winning the opener in a tiebreak. He claimed victory on his third match point in the second set after breaking the South American in the final game.
The showdown will be a huge test for two-time grand slam winner Murray, whose game has gone off the boil this season as he tries to regain his top form after back surgery 10 months ago.
Kyrgios admits that taking on eighth-seeded Murray would be another huge challenge, but he will relish the occasion.
"I'm definitely going to go into the match feeling like I've got a chance and I'm going to get some opportunities," said Kyrgios, who at world No 70 the only teenager in the top 100 of the world rankings.
"But, you know, it's going to be one of the toughest matches I have ever played, so I have just got to be ready for it."
Also in action world No 1 Novak Djokovic plays his first match since winning his Wimbledon title when he takes on flamboyant Parisian Gael Monfils while semi-finalist at the All England Club Dimitrov faces American hope Donald Young.
Winner of the Citi Open in Washington last week Milos Raonic will look to continue his excellent run of form on the hardcourt when he takes on wild card Jack Sock and fourth-seeded Tomas Berdych from the Czech Republic goes up against Lu Yen-hsun from Taiwan.
Jo-Wilfried Tsonga, Gasquet and David Ferrer are also in action against Jeremy Chardy, Ivo Karlovic and Michael Russell respectively.
Watch Andy Murray in action live on Sky Sports 3HD at 4pm