TennisStan Wawrinka win Prague Challenger tournamentPenbugsAugust 23, 2020August 23, 2020 by PenbugsAugust 23, 2020August 23, 20200 Switzerland’s Stan Wawrinka won the Prague Challenger Tournament after defeating Aslan Karatsev of Russia 7-6 (7/2), 6-4 on his return to action after a six-month...