Nadal, seeded second, lost 6-2, 7-5 to eighth-seeded Schwartzman, who will next play 12th seed Denis Shapovalov of Canada for a spot in the final.
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.
Additionally, the FIFA Congress also approved amendments relating to players switching national teams. Enditem
The BWF is looking into possible alternative dates to reschedule the world men's and women's team championship, but not before 2021.
Back in May, several countries followed the successful example of playing football matches behind closed doors in accordance with strict COVID-19 hygiene regulations.
The collaboration between Premier League and Tencent came after the termination of the English top flight's big-money contract with its former broadcaster PP Sports on September 3.
"Schalke never will be a boring club as emotions have always played a vital role. It makes Schalke unique in football."
"The salary cap policy is fair to each club," said Zhu Fangyu, general manager of Guangdong Southern Tigers.
The South American zone World Cup qualifiers were originally scheduled to begin in late March but were suspended because of the coronavirus pandemic.
Aubameyang, 31, joined the Gunners from Bundesliga side Borussia Dortmund in 2018 and has since made 111 appearances and scored 72 goals.
Puig, whose performances were one of the few positives in Barca's disappointing end to last season and who looked as if he was going to play a major role in the new season, was left in the stands for the club's traditional pre-season Joan Gamper friendly against Elche on Saturday night.