Al Duhail opened the scoring in the 12th minute as Abdullah Al Ahrak cut inside from the right flank and unleashed a powerful drive from 25 yards that nestled into the roof of Adel Al Hosani's net.
Polish midfielder Adrian Mierzejewski scored Chongqing's third goal in the 71st minute, helping Chongqing to clinch a 3-0 victory over Qingdao.
Mateusz Klich reestablished Leeds' advantage from the spot in the 41st minute and the home side looked to be cruising after further goals from Patrick Bamford and a second from Helder, before further goals from Bobby Decordova-Reid and Mitrovic gave Leeds a nervy last 25 minutes.
Hoffenheim defended deep in the hope of protecting their narrow lead to the final whistle, but it didn't work out as Cologne substitute Dominick Drexler tapped home a rebound from close range to restore parity in the 88th minute.
Li Shenglong's fantastic diving header threw SIPG into the second round after collecting Civanildo Souza (Hulk)'s corner kick.
Any deal would almost certainly see Real Madrid continue to pay part of the wages of a player whose relationship with coach Zinedine Zidane has broken down completely in recent months. Enditem
It's against all odds for second division surprise Arminia Bielefeld. Fans can expect passionate football with the clubs 8th first tier season but doubts remain if the quality is taking the new arrival over the finish line.
Arsenal continued their winning start to the season against West Ham with goals from Alexandre Lacazette and young striker Eddie Nketiah, who scored the winner five minutes from time after Michail Antonio had equalized just before the break. Enditem
Erling Haaland (front) of Dortmund vies with Nico Elvedi of Moenchengladbach during a German Bundesliga match between Borussia Dortmund and Borussia Moenchengladbach in Dortmund, Germany, Sept. 19, 2020. (Photo by Joachim Bywaletz/Xinhua)
Only 4,985 fans will be in the stadium for Kaiserslautern against Dresden in the third tier.
"We face the world's best team, and you can say it is one of the hardest games you can start with. But still, it's a game, and this gives you the chance to achieve some points," the striker told Xinhua in an interview.