Sunday's goals project to be the first two of many scores for Ronaldo in a Juventus uniform.
The hosts went agonsingly close in the 38th minute when Sassuolo shot-stopper Andrea Consigli pulled off a stunning save to stop Pol Lirola from deflecting the ball into his own net. @Cristiano won't care that it's probably the easiest goal of his career.
But Chievo, beaten 6-1 by Fiorentina last time out and on minus points after being deducted three points by the Italian football federation for false accounting, battled back in the second half.
How many goals do you think Ronaldo will score for Juventus this season?
The double proved to be the match victor for Juve, who did concede in extra time when Khouma Babacar pulled a consolation goal back for the "Neroverdi" moments after Douglas Costa was sent off for the home side, who maintain their 100% start to the season with three wins from three matches.
Juventus, who are seeking a record-extending eighth successive Serie A title, are the only team in the division still with a ideal record.
This is going to be a huge story in world football.
The clash ended on a sour note as Douglas Costa was shown a straight a red for an incident off the bal.