How are these numbers calculated?

Big Games

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

Week of 11/14100.0*Serie A100.0*Average seed
Luverdense 1 America-MG 2 +10.0
+1.4
America-MG 3 Avai 0 +2.1
+0.8
Boa Esporte 1 Joinville 0 -1.7
-0.2
ABC 1 Ceara 0 +1.5
+0.1
Atletico-GO 1 Bragantino 0 -1.2
-0.1
Avai 2 Portuguesa 0 -0.9
-0.1
Santa Cruz 0 Sampaio Correa 2 +0.9
+0.1
Bragantino 2 Santa Cruz 1 +0.7
+0.1
Sampaio Correa 3 Boa Esporte 0 +0.6
Ceara 2 Vasco da Gama 0 -0.3
-0.1
Vasco da Gama 3 Vila Nova 1 -0.1
Oeste 2 Nautico 0 +0.1
Nautico 1 Luverdense 0 -0.0
Week of 11/21None
Week of 11/29100.0*Serie A100.0*Average seed
Atletico-GO 2 Santa Cruz 3 +10.8
+0.5
Avai 1 Vasco da Gama 0 No
-0.3
America-MG 4 Sampaio Correa 0 +6.7
+0.7
Icasa 3 Boa Esporte 2 +5.4
+0.4
Luverdense 1 Ceara 0 +0.1
+0.1
Points
Chance Will Win Championship