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
Estudiantes 0 Atletico Nacional 1 +31.8
+0.8
Libertad 1 Barcelona 1 +9.1
+0.2
Week of 4/14None
Week of 4/21100.0*Chance in playoffs100.0*Average seed
Atletico Nacional 4 Libertad 0 In
+0.7
Barcelona 0 Estudiantes 2 -14.4
-0.3
Points
Chance Will Make Playoffs