Probable starting eleven:

Siena:
Pegolo; Vitiello, Rossettini, Terzi, Del Grosso; Giorgi, Vergassola, Gazzi, Brienza; Destro, Calaio

Roma:
Stekelenburg; Taddei, Juan, Heinze, Jose Angel; Simplicio, Greco, Pjanic; Totti; Borini, Lamela

Siena is deeply involved into the relegation battle, they are just one place above dropping zone. On other side Roma is fighting for the place that guarantees UEFA Champions League participation for the next season. This is a very important match for both sides. Siena is without first goalkeeper Zelijko Brkic and midfielder Francesco Bolzoni. On other side Roma coach Luis Enrique will be without Daniele De Rossi due to suspension, while Pablo Osvaldo, Simone Perrotta and Nicolas Burdisso are injured. Fernando Gago is doubtful.

I don't see a clear favorite here. The quality is on Roma side, no doubt about that. But Siena play very good against the favorites. iena managed to stay unbeaten against Juventus in the last round. Even more, that match was played in Torino. They are also good at home, playing 1:1 draw with Napoli (22.01.2012) and won 4:0 against Lazio (07.01.2012). They are also good in Coppa Italia as they won 2:1 against Napoli in the first semifinal leg. That is why I am thinking Siena is able to stay unbeaten against Roma.