Tennis: Stan Wawrinka beats Aslan Karatsev in Prague

Stan Wawrinka of Switzerland, a former US Open champion, defeated Aslan Karatsev of Russia in two sets (7-6, 6-4) in Prague on Saturday at the ongoing ATP Challenger Tour.

In the semi-finals on Friday, Wawrinka, the World No. 17 in men’s tennis, defeated the young Czech player Michael Vrbenský.