Top-seeded Roger Federer reached the semifinals of the Swiss Indoors Basel in walkover fashion, while Greece’s Stefanos Tsitsipas had to rally on Friday to set up their showdown.
Fellow Swiss Stan Wawrinka withdrew due to a sore back to move Federer closer to his 10th title at the event. Meanwhile, the third-seeded Tsitsipas had 38 winners against 26 unforced errors while rallying for a 3-6, 6-4, 6-4 quarterfinal victory over Serbian Filip Krajinovic.
Reilly Opelka delivered 31 aces while overpowering fourth-seeded Roberto Bautista Agut of Spain 6-3, 3-6, 6-3 to reach the semis. Opelka faces Australia’s Alex de Minaur, who posted a 6-4, 7-6 (4) victory over Germany’s Jan-Lennard Struff.
Erste Bank Open
Argentina’s Diego Schwartzman recorded a 7-6 (6), 6-2 victory over second-seeded Russian Karen Khachanov to reach the semifinals in Vienna, Austria.
The fifth-seeded Schwartzman lost the first three games of the match before engineering a turnaround. He will next face fourth-seeded Frenchman Gael Monfils, who required just 70 minutes to produce a 7-5, 6-1 win over Slovenia’s Aljaz Bedene.
Top-seeded homeland favorite Dominic Thiem won the five first games of his match with Pablo Carreno Busta before the Spaniard retired with a back injury. Thiem will next face Italy’s Matteo Berrettini, who fought for a 7-5, 7-6 (4) triumph over Russia’s Andrey Rublev.
—Field Level Media