Djokovic will face Jan-Lennard Struff for a spot in the round of 16. The German needed one hour and 40 minutes to move past American Michael Mmoh 6-2, 6-2, 7-5.
"This victory is very important to me - I've worked so hard to get this win," said the 27-year-old Kazakh.
World number one Djokovic struck 51 winners to notch up the win against Edmund, extending his unbeaten run this year to 25 matches.
Members of the US women's team filed a lawsuit against their federation in March because of alleged discrimination over wages. A federal judge ruled against the players, who have since lodged an appeal.
LAUSANNE, Sept. 2 (Xinhua) -- Armand Duplantis from Sweden set a season's best 6.07 meters in the pole vault at the Wanda Diamond League meeting here on Wednesday, securing the highest outdoor pole vault jump for 26 years.
"It is of course very painful if you concede a goal in the last seconds of the match but I have to say that my team gave everything. Both sides played an interesting first half with chances at both ends of the green. I am overall satisfied with the performance," said Germany head coach Joachim Low.
The 2020/2021 season will provide thrilling games for fans as the leading clubs are close together. "We had only four points between the top three before the pandemic outbreak."
Duplantis tried to challenge Sergei Bubka's 26-year-old outdoor record of 6.14 meters, but failed to continue after one unsuccessful attempt at 6.15 meters as darkness set in.
Germany started brightly on home soil and created the first chance of the game as Toni Kroos' cross into the box allowed Thilo Kehrer to test Spain goalkeeper David de Gea in the 11th minute.
Qingdao stormed to a 4-0 lead after they took victories in mixed doubles, men's singles, women's doubles and women's singles. However, men's doubles young pair Guo Ruohan and Shang Yichen defended some honor for Xiamen as they overcame a one game deficit to beat world champion Liu Yuchen and his partner Guo Junhao 9-11, 11-8, 11-9, 11-9 in the final dual.
PP Sports, owned by Chinese retail giant Suning Group, had signed a three-year deal with Premier League in 2016. The broadcaster has reportedly withheld a payment of 160 million pounds rights fees which were due to happen in March.