Austria's Dominic Thiem returns the ball to France's Richard Gasquet during the Monte Carlo ATP Masters Series Tournament round of 64 tennis match at Monte Carlo on April 9, 2023. (PHOTO / AFP)

Former World number 3 Dominic Thiem recorded nine aces while delivering a 6-1, 7-6 (4) victory over Alexandre Muller of France in the first round of the EFG Swiss Open Gstaad in Switzerland on Monday.

The Austrian saved all four break points he faced during the 95-minute victory. Thiem will next face Serbia's Hamad Medjedovic, who posted a 4-6, 6-1, 6-4 victory over Zhang Zhizhen of China, the fifth seed.

Belgium's Zizou Berge notched a 6-0, 4-6, 6-3 victory over Serbian Laslo Djere, the eighth seed. Also winning matches were Germany's Daniel Altmaier, Spain's Jaume Munar and Austria's Jurij Rodionov.

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Nordea Open

Seventh seed Jordan Thompson of Australia cruised to a 6-0, 6-1 victory over Aleksandar Kovacevic in first-round action in Newport, Rhode Island

Luca Van Assche converted 32 of 36 first-serve points (88.9 percent) while registering a 7-6 (2), 6-4 victory over Swedish wild card Dragos Nicolae Madaras in the first round of the Nordea Open in Bastad, Sweden.

The 19-year-old Frenchman had a 3-2 edge in aces. Van Assche will face defending champion Francisco Cerundolo of Argentina in the second round on Wednesday.

Also, Brazil's Thiago Monteiro rallied for a 5-7, 6-4, 6-4 victory over Daniel Elahi Galan of Colombia. Galan had a 10-9 edge in aces.

Infosys Hall of Fame Open

Seventh seed Jordan Thompson of Australia cruised to a 6-0, 6-1 victory over Aleksandar Kovacevic in first-round action in Newport, Rhode Island.

Thompson converted six of his 10 break-point opportunities and defeated Kovacevic in a tidy 66 minutes.

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Eighth seed Corentin Moutet of France opened with a 7-6 (7), 6-0 win over American wild card Eliot Spizzirri. Great Britain's Liam Broady and Australia's Rinky Hijikata also won in straight sets.