ROME — Italian Open champion Rafael Nadal set up a semifinal with Stefanos Tsitsipas thanks to a 6-4, 6-0 win over fellow Spaniard Fernando Verdasco on Friday, while Briton Johanna Konta got through to the last four for the first time.

A week after losing to the Greek upstart at the same stage of the Madrid Open, the 32-year-old Nadal will be eager to prove that defeat was just a blip as the Spaniard fine-tunes his game ahead of his bid for a 12th Roland Garros title.

The 20-year-old Greek progressed after Roger Federer pulled out with a right leg injury before their quarter-final clash.

Nadal went 2-0 down against Verdasco before surviving three break points at 4-4 in the first set, but the second seed pulled away by winning eight consecutive games to continue his hunt for a ninth title in Rome.

"I was not playing badly at the beginning at all but he was playing unbelievable (tennis),” Nadal said in a news conference.

"No mistakes, a lot of winners, taking the ball early. It was a very difficult first set. It was one of the first sets that I am happier with.

"I think I had a good feeling during the whole match. Then after winning that first set, in the second of course he slows down a little bit, but I was able to play a little bit more aggressive with the forehand.

"I did a lot of things well this afternoon. I am very happy to be in the semi-finals again. It's a good victory.”

Argentina's Diego Schwartzman reached the last four with a 6-4, 6-2, win over Japanese sixth seed Kei Nishikori and will face world No. 1 Novak Djokovic or Juan Martin del Potro.

In the women's draw, Konta booked her first semifinal spot in Rome with a 6-3, 3-6, 6-1 win over Czech Marketa Vondrousova.

The Briton, who defeated Americans Sloane Stephens and Venus Williams in her two matches on Thursday, will face sixth seed Kiki Bertens on Saturday for a place in the final.

Madrid Open champion Bertens reached the last four after Japan's world No. 1 Naomi Osaka pulled out with a thumb injury ahead of their quarterfinal.

Konta, celebrating her 28th birthday, hit 42 winners against the 19-year-old Vondrousova and dominated the final set to clinch victory in one hour 53 minutes.

She heads towards this month's French Open in fine form on clay, having finished runner-up in the Morocco Open at the start of May.

Fourth seed Karolina Pliskova recorded her 500th career win with a 6-7 (5-7), 6-2, 6-2, victory over Victoria Azarenka.

She will face Greek Maria Sakkari in the other semifinal. Sakkari won the extended duel with Kristina Mladenovic of France, winning 5-7, 6-3, 6-0. — Reuters