Stan Wawrinka has continued into the semi-finals on his return to action at this week's Prague Challenger event by seeing off Sumit Nagal in his third three set game of the week.

Wawrinka had seen off Roman Safiullin and Oscar Otte in three setter's and like his last one against Otte, he also went a set down against Nagal.

Nagal was his first seeded test of the week and the World No.127 came through the first set 6-2. He took a break straight away in a long opening service game which he won on his second break point.

It went on serve from there but he broke again to make it 5-2 to wrestle control of the first set. From there though Wawrinka began to find his rhythm and breezed through 6-0 and 6-1 in only 45 minutes for the two sets to book his place in the semi-finals.

The World No.17 still remains the player to beat in the Czech capital and next will be home hero Michael Vrbensky with the 20-year-old taking out Elias Ymer in straight sets.

https://twitter.com/ATPChallenger/status/1296468343994580993?s=20

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