"All the people involved with the Games are working together to prepare, and the athletes are also making considerable efforts toward next year under the circumstances they've been handed," Hashimoto said during a press conference.
Mena struck in the 41st and 51st minutes at Estadio Victoria as the visitors secured their fifth win from eight matches.
"I corresponded with the German Football Association DFB about Piatek's case. They ensured that they will try their best to let the player avoid the quarantine. A week ago we had a meeting with UEFA. We heard that the national federations should contact their governments to talk about the safety rules in those situations," added Kwiatkowski.
"Evanilson secured his transfer to a team in Portugal," the statement read, adding that the club tried unsuccessfully to keep him until the end of Brazil's 2020 domestic season.
The race was restarted from a standing start with Hamilton lining up first ahead of Stroll, who hadn't pitted but had been able to change his tyres during the stoppage, and Gasly, who had made his pitstop just before the safety car was deployed.
Luneng, who lost to Dalian Pro 1-0 in the last round, hit the woodwork twice during the game against Suning. Enditem
The clay-court Grand Slam, which was originally due to be held in May, will be staged from September 27 to October 11.
The home team had a great chance to even things up in the 30th minute when Eli Dasa's ball found an unmarked Eran Zahavi whose shot went wide of goal.
He earned icon status among River fans after scoring the decisive goal in his team's extra-time victory over rivals Boca Juniors in the 2018 Copa Libertadores final.
"It is of course very painful if you concede a goal in the last seconds of the match but I have to say that my team gave everything. Both sides played an interesting first half with chances at both ends of the green. I am overall satisfied with the performance," said Germany head coach Joachim Low.
The world indoor record holder had opened her outdoor season in mid-August at the Wanda Diamond League meeting in Monaco, winning with a jump of 14.27m.