How are these numbers calculated?

Big Games

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

Week of 5/24100.0*Average seed
AC Siena 0 Juventus 3 -0.6
Sampdoria 2 Udinese 2 +0.1
Calcio Catania 3 Napoli 1 +0.0
Week of 5/31100.0*Average seed
Bologna 3 Calcio Catania 1 +0.2
Napoli 3 Chievo 0 -0.2
Palermo 2 Sampdoria 2 -0.2
Reggina Calcio 1 AC Siena 1 -0.1
Points
Chance Will Win Championship