Flamengo remain second in the group with six points from three matches but with a negative goal difference.
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.
In the women's tournament, Simona Halep advanced to the semifinals after Kazakhstan's Yulia Putintseva retired with the scores at 6-2, 2-0. She is to meet ninth-seeded Garbine Muguruza of Spain, who beat former number one Victoria Arazenka.
"I believe in Arsenal. We can achieve big things together. We have something exciting here and I believe the best is yet to come," he added.
The battle for the second place remained tight until the final kilometers, as Rio Olympic Games runner-up Cai, representing Team Yunnan, held off a strong challenge from London Olympic champion Chen to finish second in 1:22:03. The 28-year-old Chen of Guangdong trailed nine seconds further behind to take the third place.
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.
RIO DE JANEIRO, Sept. 14 (Xinhua) -- The turf at Rio de Janeiro's Maracana stadium will be relaid after weeks of criticism from players, coaches and officials.
The region's premier club tournament, the Copa Libertadores, was due to resume on Tuesday, having been suspended in mid-March.
Finally, Granada have little recovery time following Thursday's Europa League debut in Albania before looking for their second win of the campaign when Alaves visit the Los Carmenes Stadium. Enditem
Granada dedicated the rest of the game to conserving energy ahead of their weekend La Liga game at home to Alaves, while the home side were reduced to 10 men in the 80th minute after Fabjan Beqja was sent off for two yellow cards.
The Kazakh Super League runners-up evened the score two minutes before halftime, as Brazilian star Vagner Love found the net after an accurate pass from captain Gafurzhan Suyumbayev.