"She played really really well today. I think everything is tough. My ball is very short and she opened the court very nice and used very nice winners," said the world 39th-ranked Zhang, who has also achieved a personal best at Roland Garros by reaching the fourth round.
Next up for Kvitova is Germany's Laura Segemund, who dispatched Spaniard Paula Badosa 7-5, 6-2 to advance. Enditem
Domenec Torrent's men are now fourth in the 20-team standings, three points behind leader Atletico Mineiro.
Despite two big losses into the season, Daqing coach Ji Yanyan would rather pick up something positive from her young team.
Argentina will face Ecuador in Buenos Aires on Thursday and Bolivia in La Paz five days later.
Earlier, Schwartzman knocked out third seed Dominic Thiem in a thrilling marathon battle which lasted over five hours, winning 7-6 (7-1), 5-7, 6-7 (8-6), 7-6 (7-5), 6-2.
Temwa Chawinga gave Wuhan a 1-0 lead in the 10th minute as she received a pass and rifled an effort into the net. Shanghai leveled the game in the 13th minute as Banda stole the ball from a Wuhan defender in the penalty area and slotted it past the goalkeeper. Just one minute later, Shen Mengyu's goal, from an assist from Banda, helped Shanghai gain a 2-1 lead.
"I think I played a really good match. I was very aggressive. I knew from last year I had to change something, so I really wanted to be better than last year and definitely, I was today," said the world No. 2.
Elsewhere, Svit registered its first victory of the new season, winning in Handlova 89-81 on Saturday.
Others drafted into Colombia's squad in the past week are Corinthians midfielder Victor Cantillo, Hertha Berlin striker John Cordoba and Bayer Leverkusen defender Santiago Arias. Enditem
In the first competition day of Wuhan Zall, team of the hardest-hit city, fans are gathering with strong passion. For some, the fighting sprits of the matches may encourage them to overcome the stressful times.