How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 5/11100.0*Average seed
Udinese 0 Cagliari Calcio 2 +0.3
Palermo 0 Sampdoria 2 +0.3
Fiorentina 3 Parma 1 -0.0
Week of 5/17100.0*Average seed
AC Milan 4 Udinese 1 +0.0
Sampdoria 3 Juventus 3 +0.0
Points
Chance Will Win Championship