The Spanish teen, ranked sixth in the world, won 47 of 63
first-service points (74.6 percent) to advance, even as Kuhn
saved eight of the 10 break points he faced.
Three seeded players weren't as fortunate. Finland's Emil
Ruusuvuori upset No. 3 seed Diego Schwartzman of Argentina 7-5,
6-4. Russia's Aslan Karatsev took down Georgian sixth seed
Nikoloz Basilashvili 6-4, 6-0, and Tallon Griekspoor of the
Netherlands eked out a 7-6 (8), 7-5 win over Danish eighth seed
Holger Rune.
Fourth seed Pablo Carreno Busta of Spain, Francisco Cerundolo of
Argentina, Borna Coric of Croatia, Fabio Fognini of Italy, Filip
Krajinovic of Serbia and qualifier Daniel Elahi Galan of
Colombia also won their matches Tuesday.
Swiss Open
Austria's Dominic Thiem pulled out a 1-6, 6-1, 7-6 (7) win over
French seventh seed Hugo Gaston in the first round at Gstaad.
Thiem, the 2020 U.S. Open champion, is still playing under a
protected ranking as he returns to competition from a right
wrist injury. He came back from down 5-3 in the third-set
tiebreak and saved match point down 7-6 before finishing the
job.
The only other seeded player in action Tuesday, sixth seed
Cristian Garin of Chile, also lost. German qualifier Yannick
Hanfmann defeated Garin 6-3, 6-4 to advance.
Other winners were France's Richard Gasquet, Spain's Jaume Munar,
Swiss wild card Dominic Stricker, Chilean qualifier Nicolas
Jarry, Peruvian qualifier Juan Pablo Varillas and Swedish
qualifier Elias Ymer.
--Field Level Media
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