"I don't know what happened actually, I felt like I was playing perfectly, I was so focused the whole match, even I am surprised that I can do that," said the 54th-ranked Swiatek, who fired 30 winners and won 81 percent of her first-serve to wrap up the victory.
Chaux, who was named in Colombia's preliminary squad for last year's Copa America in Brazil, joined America de Cali this year from their Colombian top flight rivals Patriotas Boyaca.
The 23-year-old Hertha Berlin player replaces Porto winger Luis Diaz who has been ordered to self-isolate after coming into contact with a person infected by COVID-19.
Nadal will face Sebastian Korda, the son of 1998 Australian Open winner Petr Korda, in the next round. The American youngster secured his first appearance in a Grand Slam round of 16 by beating fellow qualifier Pedro Martinez 6-4, 6-3, 6-1 to advance.
Elche will look to build on its win in the Ipurua Stadium in a duel between recently promoted teams when it entertains a solid looking Huesca.
His initial spell at the helm ended after the 1990 World Cup, however, Tabarez returned in 2006 and immediately turned the team's fortunes around.
Nitra's second victory in a row was based on a continuous effort, sending a total of 41 shots toward Zvolen's goalie and scoring one goal in each period to edge out their opponents by a small margin 3-2.
"We heated up quickly into the game, but failed to do enough on defence and rebounds," said Han.
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. Enditem
Bayern stumbled and Hertha seized the chance to restore parity at 2-2 in the 72nd, after Cunha danced through the host's defence before beating goalkeeper Manuel Neuer into the top right corner.
The corresponding men's 200m, Sinesipho Dambile upset the pre-race favorite Arthur Cisse of Cote d'Ivoire to win the event in 20.44 seconds. Cisse crossed the line 20.53 seconds ahead of Danish's Tazan Kamanga.