Stefanos Tsitsipas Stuns Tennis World, Upsets Thiem For Place In Barcelona SFs (Video)

FILE - Greece's Stefanos Tsitsipas returns the ball to Croatia's Ivo Karlovic during their first round match of the French Open tennis tournament at the Roland Garros stadium, Sunday, May 28, 2017 in Paris. (AP Photo/Christophe Ena)

BARCELONA – Greek Stefanos Tsitsipas recorded the biggest win of his career on Friday to reach the Barcelona Open Banc Sabadell semi-finals.

The 19-year-old capitalised on lapses in concentration from World No. 7 Dominic Thiem, who consistently played deep behind the baseline, to win 6-3, 6-2 in 80 minutes, the atpworldtour.com reports.