Nick Kyrgios produced another stunning serving display as he dispatched defending champion Feliciano Lopez in straight sets to reach the semi-finals at Queen’s Club.

The day after his personal-best barrage of 32 aces proved too much for Briton Kyle Edmund, the Australian No.1 matched that tally exactly to book his place in the last four with a 7-6 (7-5) 7-6 (7-3) win and a showdown with top seed Marin Cilic.

Kyrios, who has also beaten two-time Wimbledon champion Andy Murray in the London grasscourt tournament this week, was facing Lopez for the second time, having beaten him in a three-set quarter-final last week in Stuttgart.

The veteran Spaniard, 36, was bidding to reach his fourth semi-final in 13 years at Queen’s Club but although the first set went with serve, it was Kyrgios who clinched it in a tie-break that featured a brace of exquisite backhands.

Lopez refused to yield as he tried to match the world No.21 but it was Kyrgios who prevailed again, winning the second tie-break on 95 minutes to march into the last four and post another warning he must now be considered a real contender for Wimbledon.

The 23-year-old is into his third ATP World Tour semi-final of the season, including his victory at the Brisbane International.

“I felt good. I think the grass helps my serve but I’m just happy to get through,” Kyrgios said.

Earlier, Cilic ensured his passage to the last four when he beat American Sam Querrey 7-6 (7-3) 6-2.

Novak Djokovic, looking for his first Queen’s Club title, plays Frenchman Adrian Mannarino in a later match while Jeremy Chardy of France takes on American Frances Tiafoe.