Kvitova went into the match quickly as she broke her Chinese opponent twice to surge to a 4-0 lead in the opening set, before serving for the set in the eighth game.
Those to have been ruled out of the matches include forwards Juan Carlos Arce, Gilbert Alvarez and Victor Abrego, midfielders Erwin Saavedra and Leonel Justiniano, and defenders Adrian Jusino, Luis Haquin and Diego Bejarano.
The two-time Grand Slam winner committed just seven unforced errors throughout the one-sided encounter and broke her opponents six times.
Argentina will host Ecuador at La Bombonera in Buenos Aires on October 8 before a clash with Bolivia in La Paz five days later.
Bayern stumbled and Hertha seized the chance to restore parity at 2-2 in the 72nd, after Cunha danced through the host's defence before beating goalkeeper Manuel Neuer into the top right corner.
"We haven't had an official game for quite a long time, thus leading to our huge anticipation towards it. All of us are excited about coming back on court," added China's national team center.
"It has been a great season for me and it is my hope that all will be well next year as I focus on the Tokyo Olympics," said Cheruiyot after his victory.
In the other action on Friday, women's third seed Elina Svitolina cruised past 27th-seeded Ekaterina Alexandrova 6-4, 7-5 to advance to the next round. Argentine qualifier Nadia Podoroska extended her stunning run on clay after the restart of the season, as the 23-year-old dispatched Anna Karolina Schmiedlova 6-3, 6-2 to become the first Argentinean women's player to reach the fourth round in Paris since 2011. Enditem
"Everyone on the team has to contribute in some way," she noted.
Iran sit third, behind Iraq and Bahrain, in Group C of the Asian qualifiers for the FIFA World Cup Qatar 2022. Enditem
"We played great in the first half, but after bench players came in, they suffered a bit and failed to maintain the level on both ends," said Jiangsu coach Ding Tie.