How are these numbers calculated?

Big Games

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

Week of 10/20100.0*Chance in playoffs100.0*Average seed
U. Catolica 2 Internacional 1 -21.1
-0.4
Gremio 1 America de Cali 1 In
+0.3
Points
Chance Will Make Playoffs

Lottery

Why are you looking down here? We just made the playoffs!

Big Games

Week of 10/20100.0*Lottery seed
U. Catolica 2 Internacional 1 +2.8
Gremio 1 America de Cali 1 -1.4
I. del Valle 2 Barcelona SC 0 +0.2
Libertad 0 I. Medellin 1 -0.2
Santos 2 Defensa y Justicia 1 -0.1
Boca Juniors 3 Caracas 0 -0.1
Colo-Colo 0 Jorge Wilstermann 1 +0.1
Bolivar 2 Guarani 3 +0.1
Olimpia 0 Delfin 1 -0.1
Flamengo 3 Junior 1 -0.1
River Plate 3 LDU 0 +0.1
Penarol 3 Athletico-PR 2 +0.0