The remaining eight teams of the league will form the other group, to be based in Dalian, to fight off relegation, with the last to be relegated and the second to last set to vie for a berth for the next CSL season with the winner of the second-tier league. Enditem
The five-man leading pack started to wither after 27km. Duo was the first to fade away and Dong dropped back after 33km. Su and Yang Le broke away from Peng after 35km and the in-form Su managed to pull clear from Yang near 39km.
After winning the match 5-1, Yan now faces Martin Gould.
In Tuesday's match, Guoan were up by three goals before the interval, with goals from Yu Yang, Jonathan Viera and Fernando Lucas Martins.
The 21-year-old replaces Manchester City striker Gabriel Jesus, who has been ruled out of the fixtures with a calf injury.
The teams had been due to meet at Estadio Azteca in Mexico City on September 30, but Costa Rican federation Fedefutbol said it had no choice but to withdraw from the match because of quarantine rules.
Amadou Haidara (L) of Leipzig controls the ball under the defense from Karim Onisiwo of Mainz during a German Bundesliga match between RB Leipzig and 1.FSV Mainz 05 in Leipzig, Germany, Sept. 20, 2020. (Photo by Kevin Voigt/Xinhua)
The 30-year-old title favorite Roglic, however, had to finished second, 59 seconds behind, after having worn the yellow jersey for 13 days, while Australia's Richie Porte, 35, took the third place on the podium.
Mainz goalkeeper Robin Zentner had to be on guard to defuse Dani Olmo's effort in the 4th minute before Marcel Halstenberg headed just wide from a promising position four minutes later.
Philippe Coutinho also has a lot to prove after his loan spell at Bayern, while questions remain over what style of play Koeman will look to impose.
There should be goals when Sheffield United face Leeds United in Sunday's Yorkshire derby, which could be a baptism of fire for Leeds' new signing Diego Llorente given that his side has scored seven times and conceded the same number in their first two games of the campaign.