Top women's seed Simona Halep made a winning return a month after winning in Prague as she disposed of 99th-ranked Italian Jasmine Paolini 6-3, 6-4.
Stage One involves 32 groups of four players, with the player who tops each group progressing to Stage Two.
Former Birmingham midfielder Jude Bellingham is said to be a decisive factor as the 17-year-old impressed with his maturity when operating as a box-to-box midfielder.
The "BVB" smoothed the way for their win with three first-half goals, while Dominic Volkmer's red card before half-time left Duisburg hopeless.
Qian Jiegei (R) of Shanghai Greenland Shenhua vies with Wen Yongjun of Guangzhou R&F during the first round match between Shanghai Greenland Shenhua and Guangzhou R&F at the CFA (The Chinese Football Association) Cup Dalian Division in Dalian, northeast China's Liaoning Province, Sept. 18, 2020. (Xinhua/Long Lei)
"I'm really happy that it finally worked out," said Liverpool manager Jurgen Klopp. "I'm really happy to bring this wonderful person in as an add-on to the squad." Enditem
Oscar Emboaba Junior and Yu Hai made the season's Chinese Super League title contender lead 2-0 in the first half against Chongqing Lifan.
Jozwiak started his senior career for Lech Poznan in 2016 after coming through he club's youth academy. He made 104 appearances and scored 15 goals during his spell with Poznan from 2016 to 2020, including a brief loan to GKS Katowice in 2017. Enditem
After losing the Champions League final 1-0 to German side Bayern Munich on August 23, PSG kicked off their league campaign with two straight 1-0 defeats - one at Lens followed by another at the Parc des Princes against Marseille, in which three players, including Neymar, were sent off for their involvement in an injury-time brawl.
"We are excited to have agreed this partnership with Tencent, ensuring our supporters in China can enjoy following Premier League action throughout this season," said Premier League Chief Executive Richard Masters.
Elsewhere, Villarreal came back from a goal down to take their first win of the season with a 2-1 victory at home to Eibar.