How are these numbers calculated?

Big Games

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

Week of 5/15None
Week of 5/22100.0*Chance in playoffs100.0*Average seed
Cruzeiro 2 Racing 1 In
+0.5
Universidad de Chile 0 Vasco da Gama 2 In
Points
Chance Will Make Playoffs