How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Libertadores*100.0*Average seed
Sao Paulo 2 Nautico 1 +6.3
+0.2
Sport 2 Botafogo 0 +3.1
+0.0
Inter 0 Corinthians 2 -2.8
Week of 11/25100.0*Libertadores*100.0*Average seed
Botafogo 2 Atletico-MG 3 -0.1
Ponte Preta 0 Sao Paulo 0 -0.1
Week of 12/1None
Points
Chance Will Win Championship