How are these numbers calculated?

Big Games

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

Week of 4/5None
Week of 4/12100.0*Chance in playoffs100.0*Average seed
Cobresal 2 Cerro Porteno 0 -22.4
-0.3
Santa Fe 1 Corinthians 1 -2.4
-0.0
Week of 4/19100.0*Chance in playoffs100.0*Average seed
Cerro Porteno 1 Santa Fe 0 In
+0.8
Corinthians 6 Cobresal 0 -0.0
Points
Chance Will Make Playoffs