Barbosa rifled in an 87th-minute winner after Fortaleza midfielder Juninho had canceled out Everton Ribeiro's opener at the Maracana stadium. Enditem
"The pandemic really has affected us tremendously. But I have not wasted my time. Instead, I kept improving my techniques. I was ready for this competition," he added.
The top 16 world-ranked male and top 16 world-ranked female players will participate in the ITTF Finals, with a cap of four players for every association.
Defending champion Egan Bernal also arrived with the leading group and was able to improve his overall ranking to second place.
Ricciardo finished sixth ahead of Hamilton, whose late-race charge also saw him take the bonus point for fastest lap.
"It's more important to enjoy the process," Gu added. "You can take pictures and enjoy the view so as to relax yourself when you go to different places to participate in competitions. It's also important to display sportsmanship. During the cycling portion of one triathlon, a competitor in front of me fell, and I immediately stopped to help him."
In the women's singles, fourth seed Naomi Osaka of Japan finished a routine job as she eased past Anett Kontaveit from Estonia 6-3, 6-4 to reach the quarterfinals.
Rodriguinho had given Bahia the lead at Internacional's Beira-Rio stadium when he cut onto his left foot and slotted a low shot into the bottom left corner.
"The two words were first added to the emblem to make sure people understands it represents the Paralympic Games. The IPC was concerned whether Chinese people knew its meaning if they were removed," explained Lin, who was worried by the difference between the two emblems when placed together.
The girls had irregular training time during last semester because of the COVID-19 pandemic.
"There's no past Grand Slam champions left in the draw," said fifth seed Alexander Zverev from Germany, who made light work of Spain's Alejandro Davidovich 6-2, 6-2, 6-1 in another fourth round match.