Just three minutes into the second half, Hamdallah doubled his team's lead and his own tally after tapping in a rebound that fell to him just outside the six yard box, after a magnificent solo run down the right by Khalid Al-Ghannam ended with his initial shot being deflected into the Moroccan's path.
The Gunners only finished eighth in the Premier League last season, but their FA Cup win secured them a place in the UEFA Europa League for the 2020-21 campaign. Enditem
Argentina will host Ecuador at the Bombonera in Buenos Aires on October 8 before a clash with Bolivia in La Paz five days later.
Alcantara will be only Liverpool's second signing of the summer after the arrival of left-back Kostas Tsimikas, who will provide backup to Andy Robertson, even though other sides, such as Liverpool's weekend rivals Chelsea, have been more active in the transfer market.
It showed that in 56 percent of the incidents, perpetrators employed anti-Chinese hate speech, and that even though adults were present in almost half of the incidents, bystanders intervened in only 10 percent of the cases. Enditem
If Djokovic beats Schwartzman in the final, he will win a record 36th Masters title.
"The situation was complicated so it was important to win tonight. It's hard, we created some chances, but we're not 100%."
Top women's seed Simona Halep made a winning return a month after winning in Prague as she disposed of 99th-ranked Italian Jasmine Paolini 6-3, 6-4.
Seventh-placed Marseille needed a late header from substitute Valere Germain to clinch a 1-1 home draw with Lille in the latest match of the day. Brazilian forward Luiz Araujo helped Lille take the lead at the start of the second half and could have doubled it when his effort hit the cross bar in the 65th minute.
Dortmund broke the deadlock courtesy of two 17-year-old youngsters, as new arrival Jude Bellingham passed into the path of Giovanni Reyna, who drilled the ball right-footed into the far corner in the 35th minute.
The prolific Norwegian striker had another chance later but defender Nico Elvedi blocked his effort.