BASEL, Switzerland — Alexander Zverev became the first man to reach 50 wins on the ATP Tour this season by beating Robin Haase 6-4, 7-5 Wednesday in the first round of the Swiss Indoors.
The second-seeded German moved to 50-16 in a season that has brought three titles, including the Madrid Masters.
Zverev converted all four of his break points while saving eight of the 10 held by the 47th-ranked Dutchman.
Haase used a between-the-legs lob to force a break in the second set that Zverev retrieved with his own `tweener into the net.
Third-seeded Marin Cilic now has a 1-3 record in October after losing 7-5, 7-6 (2) to the 93rd-ranked Marius Copil of Romania in a second-round match.
Taylor Fritz of the United States joined Copil in the quarterfinals by beating Swiss wild-card entry Henri Laaksonen 6-2, 7-5.
Also in the first round Wednesday, fourth-seeded Stefanos Tsitsipas reached the 40-win mark in beating Jeremy Chardy 6-2, 7-6 (3). Tsitsipas came to Basel from winning his first career title in Stockholm on Sunday.
Jack Sock, the fifth-seeded American, was eliminated by Ernests Gulbis, 7-5, 6-4. Gulbis also beat Sock in the Stockholm quarterfinals last week.
Roberto Bautista Agut, the eighth-seeded Spaniard, advanced to the second round by beating Joao Sousa 6-4, 6-3.
STRASBOURG, France (AP) Top-seeded Ashleigh Barty withdrew from the Internationaux de Strasbourg clay-court tournament on Tuesday because of a right arm injury.
Barty was replaced in the main draw by lucky loser Diana Marcinkevica.
The eighth-ranked Australian said she would not take any risk ahead of the French Open, which starts Sunday in Paris.
“I gave it my best chance, but unfortunately I wouldn’t be playing my best tennis,” Barty said. “I’m busy the next two months and I need to look after my body now.”
GENEVA (AP) Former top-10 player Janko Tipsarevic used his wild-card entry to beat Peter Gojowczyk of Germany 7-5, 7-5 in the Geneva Open first round on Monday.
Now ranked No. 317, the 34-year-old Tipsarevic is back in ATP Tour main draws after missing the 2018 season for hamstring injuries to heal.
Fifth-seeded Radu Albot advanced to the second round on a day when two seeded players lost in the final week of clay-court warmups for the French Open.
Albot beat qualifier Lorenzo Sonego 7-6 (6), 7-6 (3), after 92nd-ranked Hugo Dellien beat eighth-seeded Andreas Seppi 6-1, 3-6, 6-4, and seventh-seeded Matthew Ebden lost to Nicolas Jarry of Chile 6-2, 7-6 (4).
Rain cut short play and gave former No. 3 Grigor Dimitrov a day off after playing through two qualifying rounds.
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