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*Average seed
Brasil de Pelotas 2 Atletico-GO 2 -0.3
Sport Recife 2 Ponte Preta 1 +0.1
Vila Nova 1 Oeste 1 +0.0
Week of 11/24100.0*Average seed
Ponte Preta 4 Brasil de Pelotas 0 -1.2
Week of 11/29None
Chance Will Win Championship