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
Libertad 0 I. Medellin 1 -44.8
-0.4
Boca Juniors 3 Caracas 0 +14.7
+0.1
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
Libertad 0 I. Medellin 1 +3.0
Boca Juniors 3 Caracas 0 -0.5
Flamengo 3 Junior 1 -0.3
U. Catolica 2 Internacional 1 +0.3
Colo-Colo 0 Jorge Wilstermann 1 +0.1
Santos 2 Defensa y Justicia 1 -0.1
Gremio 1 America de Cali 1 -0.1
Racing 2 E. de Merida 1 -0.1
Sao Paulo 5 Binacional 1 +0.1
Olimpia 0 Delfin 1 -0.0
Penarol 3 Athletico-PR 2 +0.0
Bolivar 2 Guarani 3 -0.0
River Plate 3 LDU 0 +0.0