How are these numbers calculated?

Big Games

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

Week of 11/20100.0*Serie A100.0*Average seed
Brasil de Pelotas 2 Atletico-GO 2 -0.9
Week of 11/24None
Week of 11/29100.0*Serie A100.0*Average seed
Bragantino 2 CRB 0 -0.6
Parana 3 Botafogo-SP 3 -0.1
Chance Will Win Championship