Washington, Sept 4 (Reporter) China's Olympic gold medalist Zheng Qinwen lost to world No. 2 Aryna Sabalenka of Belarus in the US Open quarterfinals. The Australian Open champion, Sabalenka, on Tuesday defeated Zheng 6-1, 6-2 in 73 minutes and will face Emma Navarro of the United States in the semifinals. "I just think the next time I play against her maybe I should hold a rally better and play a little bit more relaxed. Because today obviously I entered into the match with a lot of nerves," Zheng said. "It was important that I got the early break, that was an advantage because it's tough to face her," said Sabalenka, last year's US Open runner-up. Sabalenka also defeated Zheng at the same stage of the 2023 US Open before winning over the 21-year-old in the 2024 Australian Open final in January. Zheng was coming off the record late finish in a women's match in US Open history, with a three-set win over Donna Vekic in her previous match. "I couldn't sleep after I finished the match at 2:30 in the morning. I'm not able to practice yesterday because I was feeling terrible. I couldn't wake up," said Zheng. "Sometimes the schedule is like this. If I hit some balls yesterday maybe it would help for the match today, but it's fine," the 21-year-old added...////...