How are these numbers calculated?

Big Games

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

Week of 10/23100.0*Average seed
Gremio 2 Sport Recife 1 -0.9
Juventude 2 Vasco da Gama 1 -0.1
Portuguesa 2 Flamengo 3 +0.1
Parana 4 Atletico-MG 1 -0.1
Ponte Preta 2 Portuguesa 1 +0.1
Vitoria 2 Parana 0 +0.0
Week of 10/30100.0*Average seed
Sport Recife 0 Juventude 1 -1.2
Botafogo 3 Gama 1 -0.2
Cruzeiro 2 Botafogo-SP 1 +0.1
Week of 11/7100.0*Average seed
Atletico-PR 3 Sport Recife 1 -0.4
Sport Recife 1 Vitoria 1 -0.2
Juventude 3 Flamengo 1 -0.2
Gama 2 Portuguesa 1 +0.1
Portuguesa 2 Parana 2 -0.0
Coritiba 1 Juventude 1 +0.0
Points
Chance Will Make Playoffs