How are these numbers calculated?

Big Games

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

Week of 4/7100.0*Chance in playoffs100.0*Average seed
Cruzeiro 3 Mineros de Guayana 0 +18.8
+0.5
Huracan 1 Universitario de Sucre 1 +2.1
+0.1
Week of 4/14100.0*Chance in playoffs100.0*Average seed
Huracan 3 Cruzeiro 1 -16.5
-0.3
Universitario de Sucre 2 Mineros de Guayana 0 -2.1
-0.2
Week of 4/21100.0*Chance in playoffs100.0*Average seed
Cruzeiro 2 Universitario de Sucre 0 In
+0.9
Mineros de Guayana 3 Huracan 0 In
+0.3
Points
Chance Will Make Playoffs