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
Lecce 1 Fiorentina 1 -0.1
Week of 5/31100.0*Average seed
Reggina Calcio 1 AC Siena 1 +0.1
Genoa 4 Lecce 1 +0.1
Points
Chance Will Win Championship