Andy Murray put on a dazzling display for the Duke and Duchess of Cambridge as he crushed Nicolas Almagro to move within one win of an Olympic medal.
Murray produced his best performance of the tournament in front of the Royal couple on Court One at Wimbledon.
The Scot raced to a first set win in just over half an hour before Almagro suffered a recurrence of a shoulder injury and crumbled in the second to leave Murray with a superb 6-4 6-1 win. The British number one will play Novak Djokovic in the semi-finals after he defeated Jo-Wilfried Tsonga 6-1 7-5.
William and Kate looked in relaxed mood as they enjoyed their afternoon in the sun, but on court Murray was intent on getting down to business. Almagro is one of the form players in the world, but Murray challenged his opponent hard in the first game before firing down two aces to hold.
Almagro showed flashes of brilliance with some powerful forehand shots, but the Scot was clearly on top, engineering three break points in the fifth game with some excellent tennis.
The Spaniard buckled under pressure, double-faulting to gift Murray the break and the British number one fired down four successive aces in the following game to stamp his authority on the match.
Murray held to love twice to take the set after just 34 minutes and the 25-year-old's chances of victory were boosted when Almagro suffered a shoulder injury that required on-court treatment from the physio. The interruption failed to knock Murray out of his stride as he broke Almagro to love at the start of the second, the winning shot a peach of a cross-court forehand.
Murray suffered a slight wobble in the fourth game when he double-faulted twice, but held and then broke his opponent again in the following game with a brilliant forehand. The Scot held superbly before breaking the Spaniard again in the seventh game to seal a victory that was greeted by a standing ovation from the crowd, including the Royal couple.
The Scot was delighted with the quickfire victory in front of William and Kate.
He said: "I didn't speak to them after the match but it's always nice when you're playing in front of royalty. When you get people like that coming along it helps raise the profile of the sport. It was a good performance today. I served well and that helped. Now I hope I can get a medal."