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
Torino 2 Genoa 3 +0.1
Lecce 1 Fiorentina 1 +0.0
Week of 5/31100.0*Average seed
Fiorentina 0 AC Milan 2 +0.2
Genoa 4 Lecce 1 -0.0
Points
Chance Will Win Championship