It was Ronaldo's first red card in 154 Champions League games, and the decision means he could miss a return to Old Trafford when Juventus plays Manchester United.
Ronaldo, making his Juventus debut in a competition he has won five times, also had a new experience - getting a red card against Valencia for tangling with Jeison Murillo.
Ronaldo was under pressure after three games without scoring for Juventus since his move from Real Madrid, but he broke his mini-drought with two goals in Sunday's 2-1 win over Sassuolo in Serie A.
It took the former Real Madrid forward nearly 320 minutes to score his first league goal for Juventus and he did it with the simplest of tap-ins.
The 31-year-old Khedira is in his fourth season at Juventus, and he has played more minutes than any other midfielder at the club in his first three seasons.
Ronaldo was also visibly upset when Mandzukic prevented the Portugal captain from connecting on a volley early on by getting there first, prompting an apology from Mandzukic.
Ronaldo left Real Madrid in the offseason in a Serie A record 112 million euro (then $132 million) deal but has yet to fully adapt to Italian football.
Ronaldo moved from Real Madrid to Juventus in the offseason in a Serie A record 112 million euro (then $131.5 million) deal.
Ronaldo made his Serie A debut as Juventus fought back to win 3-2 at Chievo Verona in the opening match of their title defense.
Cristiano Ronaldo took just eight minutes to score his first for Juventus, in the traditional pre-season friendly against the team's "B'' side on Sunday.
Ronaldo made Juventus fans wait only eight minutes before scoring his first goal for the club in a traditional pre-season friendly.
Juventus said in a statement that Bonucci and Caldara are direct swaps with each player being valued at 35 million euros ($41 million).
It was the second straight year that the All-Star Game ended in a 1-1 draw and was decided by penalties. In 2017, Real Madrid prevailed over the MLS squad 4-2 at Chicago's Soldier Field
With Ronaldo now sporting the Juventus crest, Bale could not have been given a better opportunity to shine after the winger was mostly outshined by the Portuguese star since his arrival.
Juventus signed Ronaldo from Real Madrid earlier this month for 112 million euros (USD 131.5 million).
The 33-year-old has already paid 12.1 million pounds and will pay a total of 16.8 million pounds to evade the prison sentence.
Juventus signed Ronaldo from Real Madrid last week for 112 million euros ($131.5 million) - an Italian league record sum - and the world player of the year penned a four-year contract.
Juventus signed Ronaldo from Real Madrid last week for 112 million euros ($131.5 million), where he penned a four-year contract with the Serie A champions.
The 33-year-old striker, who spent nine years with the Spanish powerhouse, is to retain the number 7 at the Turin-based side.
The 33-year-old Ronaldo is currently on vacation in Greece after Portugal's elimination from the World Cup.
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