April 27, 2018 - Barcelona, Catalonia, Spain - STEFANOS TSITSIPAS (GRE) returns the ball to Dominic Thiem (AUT) in their quarter final of the 'Barcelona Open Banc Sabadell' 2018. Tsitsipas won 6:3, 6:2 (Credit Image: &copy; Matthias Oesterle via ZUMA Wire)