Alkasir was also fined 10,000 U.S. dollars, it said.
Next up for Halep is another 19-year-old youngster, Iga Swiatek of Poland, whom Halep defeated in the round of 16 here last year.
"The Porto footballer is prevented from joining the squad due to the protocols and sanitary regulations established by local authorities in Portugal," read an FCF statement.
"Despite only one week, she has improved a lot since we met last time. She is very young, but she has got everything on the court. Last time in Strasbourg, she didn't go into the game so quickly and played not so steadily. But this time, I can feel her confidence has boosted after winning two rounds at a Grand Slam," the former world No. 23 added.
Following is the Argentina squad:
Restraining Shanghai to five points in the first quarter and 18 at the break, Xinjiang obviously found its winning key.
According to the schedule, except for the training on Sunday afternoon, all the other sessions will be arranged in the morning from October 5 to 9.
"They are a strong team. Our young players seemed to be a bit afraid of that in the first half, while making some adjustments after the break," Tianjin coach Liu Hao commented, also hoping that his side can progress and improve after the loss. Enditem
In women's actions, top seed Simona Halep took sweet revenge on her opponent from last year's French Open defeat, trouncing American teenager Amanda Anisimova 6-0, 6-1 to progress.
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.
Defending champion Rafael Nadal stormed into the fourth round at the French Open with another straight-sets win, beating Italy's Stefano Travaglia 6-1, 6-4, 6-0 on Friday and recording his 96th victory at Roland Garros.