In Montreal, Alize Cornet of France beat listless-looking Wimbledon champion Angelique Kerber 6-4, 6-1 on in the second round of the Rogers Cup.
The home favourite did display commendable battling qualities in rescuing four break points in game nine, but he sent a forehand long when facing a fifth and Djokovic took his seat knowing he would serve for the match.
Nadal, however, had to dig deep to control the game as after winning the first set, Wawrinka was ahead in the second by breaking Nadal's serve but the Spaniard did the same and equalized the score to six games all on Thursday, reports Efe.
"It was one of those matches where everything was kind of feeling good for me".
I had to learn that and understand that good things come with time and it takes time especially after surgery to hit thousands and thousands of balls and really get a comfortable feel on the court and eventually start playing well.
"I was serving well so that break was everything", Tsitsipas said.
Defending champion Alexander Zverev of Germany is also through with a 6-4, 6-4 win over the United States' Bradley Klahn.
Shapovalov downed France's Jeremy Chardy in straight sets in the first round Tuesday night in front of a packed and supportive crowd at centre court that included Edmonton Oilers captain Connor McDavid. I worked very hard, probably harder than ever.
"I just played sort of the wrong way", Raonic said.
Leicester boss Puel rules out Maguire move to Man United
Summer signing Jonny Evans, formerly of United, Nampalys Mendy and Demarai Gray (ankle) are also concerns. He said: "I was happy with the progress of Harry in the second half of last season".
Novak Djokovic eased into the second round of the Rogers Cup in Toronto on Tuesday, as a fit-again Stan Wawrinka registered an encouraging victory and Denis Shapovalov began his bid to match last year's fairy tale performance.
Play resumed under the afternoon sun with Sharapova leading 4-1 in the first set after heavy rain and lightning forced organizers to suspend the match late Monday following a three-hour rain delay.
He capitalised on his first match point with a cross-court forehand victor, sealing the biggest win of his career.
Cornet, ranked 30 places below world number four Kerber, won 6-4, 6-1 in the second round of the Women's Tennis Association Premier 5 tournament.
Earlier Wednesday, tournament officials announced Argentine star Juan Martin del Potro had withdrawn from the tournament with a left wrist injury hours before his scheduled match against Haase.
Medvedev won 3-6, 6-4, 7-6 (9).
Nestor is retiring following the Davis Cup in September.
The top eight seeds had gotten a bye to the second round.
Stan Wawrinka and Kevin Anderson survived but Dominic Thiem crashed out, along with Milos Raonic and Fabio Fognini.