CONMEBOL says it has imposed strict sanitary protocols for the tournament, in accordance with requirements in each of the confederation's 10 member nations.
"We were the better side, that's for sure. We had lots of chances to score several goals in the first half, but it was still tight because Nice also had chances after our first two goals. But Keylor was exceptional," said PSG coach Thomas Tuchel.
Maccabi almost doubled the lead in the 75th minute, but defender Ofir Davidzada missed an easy opportunity, five meters from an empty net.
Earlier, Xiao opened his account by beating Farakh Ajaib 3-1 before drawing 2-2 with Jak Jones.
Cologne came out highly motivated after half-time and dominated proceedings, but still the "Billy Goats" squandered a number of chances.
The following games conclude the first round on Sunday: RB Leipzig face Mainz, while Wolfsburg host Bayer Leverkusen. Enditem
"Schalke never will be a boring club as emotions have always played a vital role. It makes Schalke unique in football."
In the women's pole vault, nobody conquered the height of 4.40 meters because of wet ground. Song Tingting, Niu Chunge and Asian champion Li Ling shared the same height of 4.30m, but Song won the title because she jumped the 4.30m mark in her first attempt.
Evergrande did extend its lead on 65 minutes when naturalized Luo volleyed from the distance to settle matters.
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)
Dominik Greif, the man guarding the visitor's goal on the opposite end, erased the home team's greatest scoring chance in a similar manner in the 81st minute after a square pass attempt.