#3 Leonardo Semplici suffers first defeat as Cagliari coach
Cagliari's defeat against Juventus marked their first reverse in four league games. This loss leaves them just two points above the relegation zone, with 18th-placed Torino having two games in hand over Gli Isolani.
This was also the first defeat for Cagliari under newly appointed manager Leonardo Semplici, who replaced Eusebio Di Francesco last month. Semplici did not take up any coaching role for over a year after he was sacked by SPAL last February.
The Italian manager recorded two wins and a draw in his first three games in charge of Cagliari. But this defeat comes as a setback for the hosts, who face a tough battle to stay afloat this campaign.
#2 Cristiano Ronaldo has now scored at every venue in the Serie A
Cristiano Ronaldo has been one of the most consistent goal-scorers in recent times. He has scored a lot of goals in all competitions over the years.
His 10th-minute header marked the first goal he scored at the Sardegna Arena. That means the five-time Ballon d'Or winner has now scored in each of the 18 stadiums he has played Italian top-flight games.
This impressive achievement should not come as a surprise because the reigning champions have been heavily reliant on Ronaldo's goals this term; the Portuguese has contributed 26 of the club's 54 goals so far, scoring 23 and assisting three.
#1 Cristiano Ronaldo scores the second-fastest hat-trick of his career
Cristiano Ronaldo was the star of the show on the night, as he single-handedly put Juventus in the driving seat in the first half with three goals inside the opening 32 minutes.
It marked the second-fastest hat-trick for the Portuguese star, with his fastest one coming in Real Madrid colours in 2015.
The player oozed confidence on the night and looked like scoring whenever he got a touch of the ball.
Ronaldo had been the subject of criticism after Juventus' early exit from the Champions League. But he responded well with a memorable performance.
Cristiano Ronaldo (23) is now four goals clear of his nearest competitor, Inter Milan's Romelu Lukaku (19), in the season's goal-scoring charts as he eyes his first Capocannoniere award this campaign.