On a Juventus corner, Gianmarco Ferrari attempted to head the ball down for his goalkeeper to collect but the ball came off the post and fell to Ronaldo who scored from a yard or two out.
The five-time Ballon d'Or victor was denied a hat trick by a fine save from Sassuolo goalkeeper Andrea Consigli, while he also mishit a clear opportunity late on.
Ronaldo's brace on Sunday saw him reach an impressive 400 club career goals.
Patrice Evra has hit out at Douglas Costa after the Brazilian winger spat at an opponent during Juventus' win over Sassuolo on Sunday. "I was a little tense with all the talk after my move from Real Madrid and not scoring, so there were a lot of expectations, but I thank my teammates for supporting me throughout". I also apologise to my teammates, who are always with me in the good and the bad times.
Douglas Costa made headlines for all the wrong reasons after his sending off for Juventus against Sassuolo and even his apology hasn't gone down well with the forward having to respond to criticism.
"Compared to the English Premier League, football is different, the teams defend themselves very well and give fewer chances".
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Over 85 minutes we were really dominant. "Playing our football in that way that's really nice for a manager". The Spurs chief continued: "First of all, I want to say they deserved their victory".
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As per a report, Diane Chung had stopped using her phone when it became "too hot" and kept it inside the purse. She alleged that she heard whistling and screeching sound, followed by thick smoke coming out from her purse.
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"I thought it was really cool because they're so flexible and they're also very strong", Osaka said Monday at the Pan Pacific Open.
The Brazilian winger was first yellow-carded for the offence but was then shown red after the referee had a word in his ear from the VAR officials.
Images of the incident have sparked an angry backlash from fans and pundits alike, and Costa now faces a lengthy ban for his conduct.
Juventus, chasing an eighth successive Serie A title, have 12 points, three ahead of Napoli, while Sassuolo are on eight after their first defeat of the season.
Ronaldo was delighted to get off the mark for his new club.
Lazio won 1-0 at newly promoted Empoli, while Torino drew 1-1 at Udinese.