The relief was evident as Ronaldo spoke after the game confirming even one of the world's greatest players was affected by anxiety.
"I wanted to score, but the most important thing is to perform well and win matches. I am adapting well to Italian football".
The first goal was a gift as a Sassuolo defender headed the ball onto the post and the rebound landed right at Ronaldo's feet, leaving him with the easiest of tap-ins.
Cristiano Ronaldo broke his goal drought at Juventus today.
With Juve set to kick their Champions League campaign off against Valencia this Wednesday, this is exactly the sort of form they want Ronaldo in. With both goals coming from Cristiano Ronaldo, manager Massimiliano Allegri will not be overwhelmingly pleased, however, as footage emerged of Douglas Costa unmistakably spitting at an opponent.
The Brazilian was red-carded and will probably face a lengthy ban after spitting into the face of Sassuolo's Frederico Di Francesco.
Juventus, seeking a record-extending eighth successive Serie A title, are the only team still with a ideal record.
Roma appeared to be coasting to a much-needed victory after defeat to AC Milan and a draw with Atalanta.
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.
Ronaldo's last act for Real was lifting the Champions League trophy in Kiev after beating Liverpool 3-1 in the final before he dropped the bombshell in a pitch-side interview that he had made a decision to leave Madrid.
And now Costa has released a message apologised to Juventus' fans and his team-mates, insisting it will be an isolated offence.