How are these numbers calculated?

Big Games

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

Week of 4/4100.0*Chance in playoffs100.0*Average seed
Paulista 2 River Plate 1 -1.9
+0.1
Week of 4/11100.0*Chance in playoffs100.0*Average seed
Libertad 1 Paulista 0 In
+0.1
El Nacional 2 River Plate 0 +0.9
+0.1
Week of 4/19None
Points
Chance Will Make Playoffs