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
ABC 1 Ceara 0 -17.2
-1.0
Ceara 2 Vasco da Gama 0 +10.6
+1.2
Boa Esporte 1 Joinville 0 -4.6
-0.2
Atletico-GO 1 Bragantino 0 -4.6
-0.2
Avai 2 Portuguesa 0 -4.2
-0.2
Luverdense 1 America-MG 2 -3.1
-0.2
Sampaio Correa 3 Boa Esporte 0 +2.0
+0.0
Vasco da Gama 3 Vila Nova 1 -1.5
-0.1
America-MG 3 Avai 0 +1.2
-0.1
Bragantino 2 Santa Cruz 1 +1.2
+0.1
Santa Cruz 0 Sampaio Correa 2 +1.1
+0.0
Oeste 2 Nautico 0 +0.1
+0.1
Nautico 1 Luverdense 0 -0.0
Week of 11/21100.0*Serie A100.0*Average seed
America-RN 1 Nautico 0 +0.0
Week of 11/29100.0*Serie A100.0*Average seed
Icasa 3 Boa Esporte 2 +5.9
+0.2
America-MG 4 Sampaio Correa 0 No
-0.2
Avai 1 Vasco da Gama 0 No
-0.2
Luverdense 1 Ceara 0 No
-0.8
Atletico-GO 2 Santa Cruz 3 +2.0
+0.1
Points
Chance Will Win Championship