How are these numbers calculated?

Lottery

We are out of the playoffs. Here are the big games and what ifs for draft seeds.
Although it might be more fun to go down swinging.

Big Games

Sunday, 2/6100.0*Lottery seed
Vasco da Gama 3 Americano 0 -1.5
Duque de Caxias 4 Olaria 2 +0.1
Volta Redonda 2 America 0 +0.1
Saturday, 2/12100.0*Lottery seed
America 0 Vasco da Gama 9 -2.1
Sunday, 2/13100.0*Lottery seed
Botafogo 1 Macae 1 +0.4
Americano 2 Volta Redonda 1 -0.4
Madureira 0 Fluminense 1 -0.4
Cabofriense 2 Duque de Caxias 0 -0.3
Olaria 1 Bangu 0 +0.1
Points
Chance Will Make Playoffs