Unseeded Frenchman Ugo Humbert won 36 of 45 first-service points and saved both break points he faced to topple No. 1 seed Taylor Fritz 6-3, 6-4 in the Swiss Indoors Basel Round of 16 on Thursday in Switzerland.

Fritz packed up along with fellow American Ben Shelton, the No. 2 seed. Spaniard Jaume Munar also scored a 6-3, 6-4 upset over Shelton. Munar won 33 of 38 first-service points and produced 10 aces without a double fault along the way.

American qualifier Reilly Opelka is still alive after outlasting Botic van de Zandschulp of the Netherlands 7-6 (5), 6-7 (7), 6-3 in two hours and 40 minutes. No. 4 seed Casper Ruud of Norway beat Swiss wild card Stan Wawrinka 6-4, 7-6 (5), while fifth seed Felix Auger-Aliassime and ninth seed Denis Shapovalov, both of Canada, also advanced in strai

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