How are these numbers calculated?

Big Games

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

MondayNone
Saturday100.0*Average seed
Bangu 0 Flamengo 6 +0.1
Portuguesa 1 Volta Redonda 1 -0.1
Sunday100.0*Average seed
Vasco da Gama 3 Resende 0 -1.3
Audax 2 Botafogo 2 +0.2
Nova Iguacu 3 Madureira 0 -0.0
Points
Chance Will Win Championship