How are these numbers calculated?

Big Games

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

Week of 2/6100.0*Serie B100.0*Average seed
Bahia 3 Goias 3 -0.0
+0.0
Botafogo 2 Gremio 5 +0.1
Week of 2/13100.0*Serie B100.0*Average seed
Santos 2 Coritiba 0 Yes
-0.2
Atletico-MG 1 Bahia 1 -0.1
Goias 2 Botafogo 0 -0.1
Week of 2/20100.0*Serie B100.0*Average seed
Coritiba 0 Ceara 2 -0.1
Points
Chance Will Win Championship