Top-seeded Anett Kontaveit advanced to the quarterfinals of the Hamburg European Open on Thursday with a 6-3, 6-2 win over Rebecca Peterson, while Andrey Rublev started with a victory in the men's draw.

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Tennis: WTA Tour, Singles, Women, Quarterfinals, Kontaveit (Estonia) - Petkovic (Germany). Anett Kontaveit hits a forehand. She won the match. (Photo by Daniel Bockwoldt/picture alliance via Getty Images)

Kontaveit, ranked second in the world, broke Peterson's serve five times in their second-round match. The Estonian will take on Andrea Petkovic for a spot in the semifinals.

It will be only Kontaveit's second appearance in a quarterfinal match since February after her season was disrupted by a coronavirus infection in the spring.

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Fourth-seeded Aliaksandra Sasnovich won 6-3, 6-2 against Aleksandra Krunic to set up a quarterfinal meeting with seventh-seeded Maryna Zanevska.

Rublev hit 12 aces in a 6-3, 6-4 first-round win over Ricardas Berankis. It was Rublev’s first match in Hamburg since winning the 2020 Hamburg Open. The eighth-ranked Russian next plays Francisco Cerundolo.

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Tennis: WTA Tour, Singles, Women, Quarterfinals, Kontaveit (Estonia) - Petkovic (Germany). Anett Kontaveit hits a backhand. She won the match. (Photo by Daniel Bockwoldt/picture alliance via Getty Images)

Fourth-seeded Pablo Carreno-Busta was upset 6-3, 1-6, 7-6 (5) in his second-round match against Alex Molcan, who moves on to a quarterfinal meeting with Borna Coric.

Hamburg European Open: Anett Kontaveit advances to quarterfinals in victory over Rebecca Peterson

Kontaveit is the top-seed in the tournament on the women's side