BEIJING: Top seeds Carlos Alcaraz and Aryna Sabalenka both breezed into the next round of the China Open with routine victories on Sunday. Alcaraz sealed a place in the men’s quarter-finals with a smooth 6-2, 6-2 victory over Italy’s Lorenzo Musetti in Beijing. The world No. 2 overpowered his opponent and seized the first set when Musetti whacked a baseline backhand into the net. The Spaniard then broke serve twice in the second set and saw out a comfortable match with an unreturned serve. He will next face Casper Ruud after the world No. 9 came back to beat Argentina’s Tomas Etcheverry 1-6, 7-5, 7-6 (9-7). “I feel great, honestly. It was a good performance against a really tough opponent,” Alcaraz said at a post-match news briefing. “(My level) didn’t (go) up and down. I stayed at a high level, high quality, during the whole match,” the 20-year-old said. The match balls have been a sticking point in the tournament’s early rounds, with Alcaraz’s main challenger Daniil Medvedev describing them on Saturday as “like a grapefruit.” Alcaraz said Sunday he had also felt the distinct quality of the balls, which Medvedev said were also quick to fluff up, “since day one.” “It’s something tough, but tennis players have to get used to the balls in every tournament,” he said in response to a question from AFP. “Here, in just one or two games, the balls become really different from (when they’re) new. It’s a kind of different (style of) play,” he said. Also on Sunday, world No. 7 Jannik Sinner obliterated Japan’s Yoshihito Nishioka 6-2, 6-0. The Italian will play a quarterfinal against Bulgaria’s Grigor Dimitrov after he upset fourth-ranked Holger Rune 6-3, 7-5. World No. 1 Aryna Sabalenka earlier sailed into the second round of the women’s draw with an imperious 6-1, 6-2 defeat of American Sofia Kenin. The Belarusian pummeled Kenin with a succession of mighty serves and groundstrokes and wrapped up the opening set with an ace after just 23 minutes. The 25-year-old broke serve twice more in the second set as Kenin — playing with heavy strapping on her left thigh — failed to muster a response. Sabalenka sealed the match with yet another unreturned serve to set up a tie against Britain’s Katie Boulter, ranked No. 54 in the world. “Honestly, I didn’t expect to play that good on my serve — in practice, it didn’t work very well,” Sabalenka said at a post-match briefing. “But I was super hyped that I was able to bring that level on my serve today. I think it helped a lot,” she said.