The South American zone World Cup qualifiers were originally scheduled to begin in late March but were suspended because of the coronavirus pandemic.
Battaglia made his debut for Argentina against Colombia in September 2018 but his ascent on the international stage was halted by a serious knee injury just weeks later.
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.
"Five, six, seven, eight! And jumping jacks," Cao Tingting, a 16-year-old girl shouted at the front of the class.
The Rubro-Negro won their opening two matches of South America's premier club competition before it was halted in March because of the coronavirus pandemic.
"It was a great battle today," Stahl told World Athletics' official website. "This has been a great season even though it was a complicated season - I competed even more this year than last. Next year is an Olympic year and I'm really looking forward to that one."
Gilbert and Lu met in the last match of the group both with one win and one draw. The world No. 11 won the final frame to draw 2-2 with Lu but advanced by claiming the highest break of 98.
The 31-year-old had one year left on his previous contract and would have been able to leave for nothing in the summer of June 2021.
The Spain international's deal should also be confirmed on Friday, although he won't take part in Sunday's important league fixture which sees Liverpool travel to face big-spending Chelsea. Enditem
Despite several setbacks over the past few months, the 25-year-old is optimistic about turning things around wearing the shirt of Schalke 04, when facing 2020 treble-winning Bayern Munich in the 2020/2021 Bundesliga season opener this Friday evening.
Thiago started his career in Barcelona before moving to Munich in 2013. He arrived Anfield fresh from helping Bayern Munich winning the Bundesliga, German Cup and Champions League in the 2019-20 season.