How are these numbers calculated?

Big Games

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

Week of 11/11100.0*Serie A100.0*Average seed
Gama 3 Marilia 0 No
-0.7
Guarani 1 America-RN 2 No
Sao Raimundo-AM 3 Santo Andre 2 +0.1
CRB 3 Ituano 4 -0.1
Avai 1 Nautico 1 +0.0
Week of 11/18100.0*Serie A100.0*Average seed
Marilia 1 Brasiliense 1 -0.2
America-RN 1 Santo Andre 2 -0.1
Nautico 2 Ituano 0 +0.1
Avai 1 CRB 2 +0.1
Gama 1 Coritiba 1 +0.1
Ceara 0 Atletico-MG 1 +0.0
Week of 11/25100.0*Serie A100.0*Average seed
Sao Raimundo-AM 2 Gama 0 +0.2
Paysandu 4 Marilia 1 -0.1
Points
Chance Will Win Championship