Arthur Fils made it through to the semi-finals of the indoor event in Basel with an impressive 7-6 (7/5), 6-3 win over third seed Stefanos Tsitsipas on Friday.
The No. 20-ranked 20-year-old extended his winning streak against Top 20 players to five matches in a row on Friday with a 7-6 (5), 6-3 victory over No. 11-ranked Stefanos Tsitsipas in Basel.