How are these numbers calculated?

Big Games

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

Week of 10/25100.0*Average seed
Portuguesa 1 Goias 2 -0.6
Atletico-MG 3 America-RN 2 -0.2
Internacional 4 Flamengo 0 -0.1
Flamengo 1 Vitoria 0 -0.1
Week of 11/1100.0*Average seed
Portuguesa 2 Criciuma 2 -0.4
Corinthians 1 Flamengo 0 +0.4
Parana 1 Atletico-MG 0 +0.2
Flamengo 1 Coritiba 0 -0.1
Vasco da Gama 2 Atletico-MG 0 +0.1
Vitoria 2 Santos 0 +0.1
Atletico-PR 2 Internacional 1 +0.1
Week of 11/8100.0*Average seed
Atletico-MG 3 Vitoria 2 -0.3
Botafogo 3 Portuguesa 3 +0.2
Points
Chance Will Make Playoffs