The Kyodo news agency said that despite the mass infections, the club's Pacific League game against the Orix Buffaloes went ahead as planned on Tuesday. The Chiba side lost 3-0 at home.
Several planned on-loan-transfers deals failed because implementing a buying-option was rejected as the selling clubs demanded an obligation.
Gaston is to challenge third seed Dominic Thiem in the fourth round. Earlier in the day, the Austrian had claimed another straight-sets victory over 28th seed Casper Ruud, beating the Norwegian 6-4, 6-3, 6-1.
"We contained their three-pointer shooting quite well," Dongguan coach Lin Yaosen reflected.
Four-time winner Kipchoge from Kenya was expected to clinch the victory comfortably as his archrival Kenenisa Bekele announced his withdrawal from the event due to a calf injury on Friday.
Hao joined Guangzhou Evergrande for study under world-class coach Marcello Lippi after managing the Chinese women's national team from 2012 to 2015. He was appointed the executive coach of the Chinese Olympic men's team, but his side failed in pursuit of a ticket to the Tokyo Olympics.
With five players on target, Atalanta enjoyed another convincing victory as the Dea crashed Cagliari 5-2.
"I hope the crisis makes the clubs to rethink their strategy and increase their efforts to give space for young talents," he added.
Al Nassr broke the deadlock with a penalty in the 35th minute before Abdi Mehdi Qara leveled for Persepolis just six minutes later.
Jorginho scored two penalties in the 78th and 82nd minutes to assure a comfortable win in the best performance by Frank Lampard's side this season.
After substitutes stepped in, Xinjiang maintained its level of defense, holding Shanghai to shot-clock violations on several occasions and leading 27-18 at halftime.