Lazio coach Stefano Pioli feels they meet Inter Milan as favourites.
The Aquile are currently in joint fourth place with Sampdoria and Genoa, but Napoli have already played.
"We must be concentrated only on the game and be ready to climb back up the standings," said Coach Pioli in a Press conference.
"The reality of the table shows that so far Lazio have been superior to Inter, even if we only picked up three points from the last four rounds.
"We're not even halfway through the season and deserve to be in our current position. It would be great to spend Christmas knowing we're third in the table. To do that, tomorrow we must take the initiative and seek the victory at San Siro."