"I was really focused each game and each point. Especially against top players, one point can make the difference. So I had to stay very calm and keep going," the world number 50 added.
Fourth seed Naomi Osaka of Japan booked her place in the third round with a comfortable 6-1, 6-2 win over Italy's Camila Giorgi.
Arrascaeta restored his team's two-goal advantage with a diving header in heavy rain but Jose Pimentel responded with his side's second goal just before halftime.
The match ended in a goalless draw, despite Botafogo's 17 shots on goal to Coritiba's seven.
The total number of coronavirus cases in the United States has surpassed 6 million, with national death toll topping 185,000, according to data compiled by Johns Hopkins University.
"We'll see what happens; we have plenty of time in this transfer window and a couple of others as well. Time will tell," commented the forward, who added "the decision is in Real Madrid's hands."
BUDAPEST, Sept. 2 (Xinhua) -- Hungary's Attila Valter won the Tour de Hongrie cycling race on Wednesday, beating American and Australian rivals.
PARIS, Sept. 2 (Xinhua) -- British rider Adam Yates took the lead of the Tour de France after home title favorite Julian Alaphilippe was given a 20-second penalty in Wednesday's stage five, which was won by Belgian Wout van Aert.
It was a bizarre way for the Frenchman to lose the jersey which he had kept for three days after winning the stage two.
THE HAGUE, Sept. 2 (Xinhua) -- Manchester United have signed midfielder Donny van der Beek from Ajax, both clubs announced on Wednesday.
World number one Djokovic struck 51 winners to notch up the win against Edmund, extending his unbeaten run this year to 25 matches.