How are these numbers calculated?

Big Games

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

Week of 11/12100.0*Serie A100.0*Average seed
Bahia 3 Portuguesa 0 -15.5
-0.4
Sao Caetano 0 America-MG 0 +4.2
+0.1
Sport Recife 1 Santo Andre 1 +2.1
+0.1
ASA 0 Parana 1 +0.3
+0.1
Coritiba 2 Figueirense 1 +0.1
Week of 11/19100.0*Serie A100.0*Average seed
America-MG 2 Sport Recife 1 -11.7
+0.0
Portuguesa 2 Ipatinga 1 +10.6
+0.3
ASA 1 America-RN 2 +0.0
Parana 0 Bragantino 0 +0.0
Week of 11/26100.0*Serie A100.0*Average seed
Sport Recife 1 Portuguesa 2 +18.8
+0.2
Ponte Preta 0 America-MG 0 No
-0.1
Points
Chance Will Win Championship