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Easily the game of the week.
The winner, if there is one, will be in second place.
Napoli have been a particularly fickle club this season. Their last loss was a strange one, to Atalanta, in which they couldn't muster a goal. Worse than that were their two horrific draws against Torino and AC Milan.
When they played Juventus earlier in the season, they lost 2-0. Simply put, this is Napoli's chance to solidify their place in the Scudetto discussion of 2012-13.
For Inter, it's an opportunity to reassert themselves at the top of the table at home. They did well towards doing so when they shocked Juventus 3-1 in Torino.
Since then, it has been a bit of a different story.
They had a huge letdown on the road against Atalanta, drew against Cagliari and then lost on the road to Parma. Their triumphant bounce back from that three-game stretch?
A 1-0 road win against Palermo.
If either of these teams want to prove they belong at the Bianconeri's heels, Sunday is a good chance to prove it.
Not sure they will though.
Predicted result: probably a 2-2 draw.