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 C100.0*Average seed
Sao Bento 4 Londrina 1 -2.1
+0.8
Vila Nova 1 Oeste 1 -0.2
+0.1
Week of 11/24None
Week of 11/29100.0*Serie C100.0*Average seed
America-MG 1 Sao Bento 2 +1.2
Londrina 2 Guarani 0 -0.3
Oeste 1 Criciuma 2 -0.3
Cuiaba 1 Vila Nova 2 -0.3
Points
Chance Will Win Championship