How are these numbers calculated?

Big Games

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

Week of 4/8100.0*Chance in playoffs100.0*Average seed
Libertad 0 River Plate 2 In
+0.6
Week of 4/15100.0*Chance in playoffs100.0*Average seed
River Plate 2 Emelec 0 +0.2
Libertad 1 Deportivo Cali 0 +0.2
Week of 4/25None
Points
Chance Will Make Playoffs