Nadal will face Sebastian Korda, the son of 1998 Australian Open winner Petr Korda, in the next round. The American youngster secured his first appearance in a Grand Slam round of 16 by beating fellow qualifier Pedro Martinez 6-4, 6-3, 6-1 to advance.
With the result, Union Berlin move up to third place in the standings, while Mainz stay 17th after suffering their third straight defeat of the new season.
Buckling up their defense and increasing ball movement in transition, Sichuan began to gain ground in the second quarter. After Shao Ting's three-point play with 5:57 left, they turned the game around at 30-28 before going into halftime up 41-39.
Dong contributed 26 points, five boards and six assists to Zhejiang, while her teammate Huang Jiali pocketed 26 points and 10 rebounds. Wang Jiaqi of Zhejiang added 11 points, plus 12 assists. Enditem
Moussa Djenepo scored his first home goal for Southampton in the 41st minute and Oriol Romeu smacked home a sensational volley with just over 20 minutes remaining as the Saints kept their second clean sheet in two games.
He is also doubtful for Barca's next games, which are away to Getafe on October 17, their Champions League debut at home to Ferencvaros on October 20, and the first 'Clasico' of the season at home against Real Madrid five days later.
Five Dongguan players scored in the double-digits. Dilana Dilishati had 19 points and eight boards. Shen Yi scored 18 points and dished out eight assists.
Osasuna got back to winning ways with a 2-0 win at home over Celta Vigo, thanks to a 23rd-minute goal from Facundo Roncaglia, who fired home from outside of the Celta penalty area, before crossing for Jonathan Calleri to head home the second for the Pamplona-based outfit 14 minutes from time.
Svit's Serbian guard and the 2018 MVP Sasa Avramovic had a great night, pushing his teammates to victory with 32 points, seven rebounds, and three assists.
Peru will be without several key players for their opening fixtures against Paraguay and Brazil. The biggest absence will be that of their captain and record scorer Paolo Guerrero, who has been ruled out for the rest of 2020 because of a ruptured anterior cruciate ligament.
The 31-year-old, who is to face No. 7 seed Petra Kvitova in the next match, also became the first Chinese singles player since Li Na in 2012 to reach the fourth round at Roland-Garros.