The South American zone's 2022 World Cup qualifiers had been scheduled to begin in late March but were postponed because of the coronavirus pandemic.
Alba had to limp off in the 74th minute and was replaced by new signing Sergino Dest, who played on the left of the Barca defense, despite being right-footed.
Slovan's Canadian forward Brendan O'Donnell could have tied the game in the second period but only hit the goal post to go 1-2.
In the men's 1,500m race, world leader Cheruiyot fought off compatriot Kumari Taki in a fierce home straight brawl to take the win in three minutes and 34.31 seconds in front of 2000 spectators that were allowed the entry under COVID-19 control protocols.
The previous best for the No.7 seed in Paris was the semifinals in 2012 when she lost to eventual champion Maria Sharapova 6-3, 6-3.
"I got a bit emotional last two points of my match. I really started to think still about the match because in tennis we really never know when it's the end. But my memories, happy memories, when I made my comeback here in 2017, when I step on the Philippe Chatrier, I couldn't really imagine me to be in the quarterfinal of this slam. Everything just came back to me," said Kvitova, who was attacked by a break-in knife-wielding robber at her home in the Czech Republic during the off-season of 2016 which left her dominant left hand seriously injured. It was at Roland Garros that the two-time Grand Slam champion made her comeback.
Elsewhere, Wolfsburg and Augsburg shared the spoils after playing out a goalless stalemate. Enditem
FC Barcelona have had a promising start to the campaign under new coach Ronald Koeman, scoring seven goals in their opening two matches, with the midfield pairing of Sergio Busquets and Frenkie de Jong giving a solid base for the attacking quarter of Ansu Fati, Leo Messi, Philippe Coutinho and Antoine Griezmann.
Berenguer will cost around 12 million euros (about 14.05 million U.S. dollars) and is contracted to Athletic Bilbao until the end of June 2024.
"It was a very even match, perhaps more difficult than the result showed," said Djokovic, who is seeking for an 18th Grand Slam title.
With a perfect record in the new season, Jiangsu expects a tough route ahead as title contender Xinjiang awaits them on Saturday.