As well as Ronaldo, new signings Emre Can and the returning Leonardo Bonucci were present at Juventus Stadium for the warm-up match.
The former Real Madrid striker played in his first match for Juventus in a friendly against the club's B team at Villar Perosa.
Almost 5,000 fans crammed into the compact "Gaetano Scirea" stadium in Villar Perosa at the foot of the Italian Alps, as supporters descended on the small town in order to catch a glimpse of the superstar attacker in his first appearance since signing for 100 million euros ($117 million, Sh11.7 billion) a month ago.
The first team then had a goal ruled out for offside before the Portuguese was again involved as they did double their lead thanks to an own goal by the B team's goalkeeper.
Members of the industrial dynasty - founders of Fiat auto manufacturers and often called the "Italian Kennedys" - have lived at "The Castle" in Villar Perosa since the 19th century, while deceased former club chairman Gianni Agnelli was town mayor between 1945 and 1980.
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It took Ronaldo eight minutes to find the back of the net as he latched onto a pass from Federico Bernardeschi before calmly slotting home.
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Interest in Juve and in Italian football has spiked following Ronaldo's arrival. "He's won the last three", said Savelli.
His domestic form last season - despite scoring 26 goals in La Liga - was below the nearly superhuman levels that had characterised his time in Spain as Madrid finished third behind local rivals Atletico and a whole 17 points behind champions Barcelona.
Juve made it 5-0 early in the second half through Claudio Marchisio, before the traditional pitch invasion brought the game to a close in the 70th minute.
Ronaldo stunned Real Madrid fans last month when he joined Juventus for an Italian league record sum of €112 million (NZ$194m).
The friendly, which takes place annually, represented Juventus' final test before they kick-off their Serie A title defence against Chievo next Saturday.
Ronaldo, who joined the Serie A champions last month in a deal worth a £100million, made the ideal start to life in Turin.