Roma desperate to avoid nightmare before Christmas at Juve

Embattled Roma travel to Turin on Saturday desperate to bring some Christmas cheer back to their beleaguered fans in the capital by pulling off an upset against Cristiano Ronaldo's Juventus.

Unbeaten Italian champions Juventus have had a record-breaking start to the season since their blockbuster signing of Ronaldo in the close-season for 100 million euros ($117 million).

The 33-year-old has started every one of Juventus' 16 league games, scoring 11 goals, being substituted just once, in the final ten minutes against Fiorentina this month after he scored the third goal from the spot.

Massimiliano Allegri's side have dropped just two points at home against Genoa, and are on course for an eighth consecutive Scudetto -- eight points clear of second-placed Napoli, with Inter Milan a further six points adrift in third.

By contrast Roma, after finishing third last season, are in the doldrums after the departure of key players including goalkeeper Alisson and midfielders Radja Nainggolan and Kevin Strootman.

They are seventh, with just six wins, including last weekend's 3-2 success over Genoa, but are 22 points behind Juventus.

A defeat on Saturday would see them slip 25 points behind before they host Sassuolo on December 26 and travel to promoted Parma to round off the year.

Juve travel to Atalanta and host Sampdoria in their final two matches before the three-week winter break.

"It's always a war against Roma," conceded Brazilian international defender Alex Sandro.

"We are prepared and know that they are prepared too, so I expect it to be a great game for players and fans." Juventus clinched their seventh straight league title last May with a 0-0 draw against Roma at the Stadio Olimpico.

Ronaldo will play his first match against Roma for Juventus but the former Manchester United and Real Madrid striker knows the club well.

He has faced them six times -- winning five -- including a memorable Champions League quarter-final return leg at Old Trafford in 2007.

United lost at the Stadio Olimpico 2-1, but thrashed Roma 7-1 at home.

"When it was 6-0, an opponent begged me to stop dribbling. Others threatened to hurt me," recalled Ronaldo, who scored a double on the night, and has claimed five goals in five Champions League games against the Romans.

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"So we all really want to put in a great performance in Turin, more for us than because it is a big, important game."