In the women's singles, fourth seed Osaka survived a ding-dong battle against Kostyuk to emerge victorious 6-3, 6-7 (4), 6-2 after two hours and 33 minutes.
Teda that played in Beijing's neighboring city Tianjin, failed to snatch a win in the league after a 2-1 defeat against Chongqing Dangdai Lifan for its seventh consecutive loss.
The 25-year-old equalized with the last kick of the match after Rodinei Almeida brought down Elber Pimentel with a rash challenge.
"I'm happy with the win, the record didn't come out as we had planned but I'm satisfied with my general performance, now I will concentrate on the next competition, the Ostrava meeting," Kipyegon told Xinhua on Saturday.
"Holding the Expo in the Olympic city of Beijing sends a strong signal of confidence. The world of sport is ready to contribute to the recovery from the crisis and to rebuilding a more human-centered and inclusive society."
"I'm kind of scared how good she's going to be in the future," Osaka said. "My biggest takeaway from her game is that she didn't back down from me or from the speed of my ball, which for someone that young is kind of amazing."
"Nicolo Zaniolo will undergo surgery on Wednesday after MRI scans on Tuesday confirmed the player has suffered a complete tear to the anterior cruciate ligament of his left knee," read a statement of Roma.
Thursday saw some rumors in the press that the player was considering a U-turn to see out the remaining year of his contract, but Jorge Messi's communique implies there is no climb-down from the family.
"He's a very solid player, maybe doesn't possess any big weapons, but every shot is very good," Djokovic said of Busta. "He returns a lot of balls, so I've got to be ready for a lot of exchanges. It's going to be a demanding match physically and mentally. Hopefully I'll be able to continue the good performance that I had tonight."
The clay-court Grand Slam, which was originally due to be held in May, will be staged from September 27 to October 11.
"The pandemic really has affected us tremendously. But I have not wasted my time. Instead, I kept improving my techniques. I was ready for this competition," he added.