How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Thursday100.0*Serie B100.0*Average seed
Guarani 2 Botafogo 0 -2.9
+0.1
Parana 1 Gremio 1 +1.8
-0.1
Fluminense 2 Portuguesa 0 -1.3
+0.0
Sunday100.0*Serie B100.0*Average seed
Vitoria 4 Palmeiras 3 Yes
-1.0
Paysandu 0 Internacional 2 +10.3
-0.4
Figueirense 2 Parana 2 +6.2
-0.1
Portuguesa 2 Bahia 4 -3.6
+0.0
Botafogo 0 Sao Paulo 1 -3.2
+0.2
Flamengo 2 Guarani 2 -0.0
Points
Chance Will Make Playoffs