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
Bragantino 2 Santa Cruz 1 -9.7
-0.8
Santa Cruz 0 Sampaio Correa 2 -6.5
-1.6
Sampaio Correa 3 Boa Esporte 0 +2.9
+0.1
ABC 1 Ceara 0 +2.4
+0.1
Boa Esporte 1 Joinville 0 -2.1
-0.2
America-MG 3 Avai 0 +1.5
-0.0
Ceara 2 Vasco da Gama 0 -1.2
-0.2
Luverdense 1 America-MG 2 -1.0
-0.2
Avai 2 Portuguesa 0 -0.8
-0.1
Atletico-GO 1 Bragantino 0 -0.7
-0.1
Vasco da Gama 3 Vila Nova 1 -0.2
Oeste 2 Nautico 0 +0.1
Week of 11/21100.0*Serie A100.0*Average seed
America-RN 1 Nautico 0 +0.1
Bragantino 1 Parana 1 +0.0
Week of 11/29100.0*Serie A100.0*Average seed
Atletico-GO 2 Santa Cruz 3 +0.7
Nautico 1 Ponte Preta 1 +0.2
America-MG 4 Sampaio Correa 0 +0.2
Points
Chance Will Win Championship