How are these numbers calculated?

Big Games

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

Week of 5/1100.0*Serie B100.0*Average seed
Palermo 2 Sampdoria 0 -22.2
+0.3
Juventus 2 Carpi 0 -3.9
+0.0
Udinese 1 Torino 5 -1.4
Milan 3 Frosinone 3 -0.0
Week of 5/8100.0*Serie B100.0*Average seed
Carpi 1 Lazio 3 -20.1
+0.2
Fiorentina 0 Palermo 0 -12.3
+0.2
Atalanta 1 Udinese 1 +4.3
-0.1
Frosinone 0 Sassuolo 1 +0.1
Hellas Verona 2 Juventus 1 +0.1
Week of 5/15100.0*Serie B100.0*Average seed
Udinese 1 Carpi 2 +33.8
+0.0
Palermo 3 Hellas Verona 2 No
+0.3
Points
Chance Will Win Championship