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 -3.1
+0.2
Fluminense 2 Portuguesa 0 -2.9
+0.1
Parana 1 Gremio 1 +0.3
-0.0
Sunday100.0*Serie B100.0*Average seed
Vitoria 4 Palmeiras 3 Yes
-1.7
Paysandu 0 Internacional 2 +8.0
-0.1
Botafogo 0 Sao Paulo 1 -4.5
+0.2
Figueirense 2 Parana 2 +4.4
+0.0
Portuguesa 2 Bahia 4 -3.2
-0.0
Flamengo 2 Guarani 2 -0.1
Points
Chance Will Make Playoffs