Dominic Thiem and Stan Wawrinka reach St Petersburg semi-finals

Stan Wawrinka in action

Dominic Thiem and Stan Wawrinka secured their places in the St Petersburg Open semi-finals with contrasting wins.

Top seed Thiem required three sets to beat Russian hope Daniil Medvedev, winning 6-2, 3-6, 7-6 (7-2) in just over two hours.

The Austrian will face fifth seed Roberto Bautista Agut for a place in the final after the Spaniard beat Marco Cecchinato of Italy 7-6 (7-0), 6-3.

Wawrinka, who struggled for form earlier this year after spending several months on the sidelinse following knee surgery, continues to look like his former self match-by-match.

The three-time Grand Slam winner required only one hour and 11 minutes to beat defending St Petersburg Open champion Damir Dzumhur 6-3, 6-4.

He will face Martin Klizan, who came from a set down to beat seventh seed Denis Shapovalov 3-6, 7-5, 6-3, in the last four.

“The level of my play was good today and the win makes me feel positive,” Wawrinka said.

He added: “I expect an interesting match with Klizan in the semis. We’ve played a couple of times in the past and it was always really tough.”

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