How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Thursday100.0*Average seed
Parana 1 Gremio 1 +0.1
Sunday100.0*Average seed
Corinthians 1 Vasco da Gama 1 -0.4
Atletico-PR 4 Juventude 0 +0.2
Gremio 1 Atletico-MG 0 +0.1
Sao Caetano 3 Santos 2 -0.1
Points
Chance Will Make Playoffs