Top seeds Novak Djokovic and defending champion Rafael Nadal, who have first round byes, will begin their campaigns on Wednesday.
In Saturday's early kick-off, Arsenal brushed past newly-promoted Fulham 3-0 at Craven Cottage, with new signings Gabriel and Willian both impressing.
"He has the speed, he can combine, can defend, can press. It makes it just more unpredictable and gives us real options for different systems because he can play pretty much all three positions up front in a 4-3-3. If we play with four midfielders he can play both wings," said the German coach.
"Everyone will be desperate to beat Europe's top team," the 32-year-old Pole told Xinhua before the Bavarians' 2020/21 Bundesliga curtain-raiser against Schalke on Friday.
Clubs and fans complained about the different measures. Some spoke of unfair competition.
Zaha's solitary goal a week ago gave Palace a 1-0 win at home to Southampton, and he was on target twice more to produce the surprise of the weekend.
Former world number one Victoria Azarenka of Belarus advanced to the quarterfinals as her opponent Darya Kasatkina of Russia retired during the first set with the scores at 6-6.
LONDON, Sept. 19 (Xinhua) -- Manchester United suffered a 3-1 home defeat to Crystal Palace in first Premier League match this season, with Old Trafford old boy Wilfried Zaha scoring twice against his former club.
The Israeli club scored the opening goal in a clever team execution of a free kick from 20 meters in the 30th minute. Instead of shooting on goal, Dutch midfielder Tjaronn Chery produced an impressive pass to Australian striker Nikita Rukavytsya, who passed to midfielder Yuval Ashkenazi for an easy goal.
Barcelona's Lionel Messi (C) vies with Elche's Nuke Mfulu (R) during the 55th Joan Gamper Trophy friendly football match between Barcelona and Elche in Barcelona, Spain on Sept. 19, 2020. (Xinhua/Joan Gosa)
In added time, Sharjah sealed their victory as former Kashima Antlers and Al Ain winger Caio exchanged passes with Coronado following a corner and drilled an effort from a tight angle that beat the goalkeeper to make it 4-2 in the end.