How are these numbers calculated?

Big Games

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

Week of 11/14100.0*Serie C100.0*Average seed
Vila Nova 0 Oeste 1 Yes
Avai 2 Portuguesa 0 +0.0
Vasco da Gama 3 Vila Nova 1 -0.0
Week of 11/21None
Week of 11/29None
Chance Will Win Championship