It is never logical to root against Udinese.
I know it's a great club. Hell, my local team Watford is now part of the Pozzo's network, so I sort of feel part of it.
Lazio have always been my first footballing love in Italy, and I adore their current team. No massive stars in the squad, but some great players in there like Hernanes, Klose & Ledesma.
May the best team win?