How are these numbers calculated?

Big Games

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

Week of 11/21100.0*Libetadores100.0*Average seed
Corinthians 2 Nautico 3 No
-0.9
Santos 4 Coritiba 0 -0.0
Flamengo 0 Goias 0 +0.0
Vitoria 2 Barueri 1 +0.0
Week of 11/29100.0*Libetadores100.0*Average seed
Corinthians 0 Flamengo 2 -0.7
Fluminense 4 Vitoria 0 +0.2
Goias 4 Sao Paulo 2 -0.2
Avai 2 Santos 2 +0.1
Gremio 4 Barueri 2 +0.1
Atletico-PR 2 Botafogo 0 -0.1
Cruzeiro 4 Coritiba 1 +0.0
Week of 12/5100.0*Libetadores100.0*Average seed
Atletico-MG 0 Corinthians 3 +1.0
Points
Chance Will Win Championship