How are these numbers calculated?

Big Games

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

Week of 4/23100.0*Chance in playoffs100.0*Average seed
Libertad 0 Gremio 2 +20.5
+0.3
Rosario Central 1 Universidad Catolica 1 +9.1
+0.1
Week of 5/7100.0*Chance in playoffs100.0*Average seed
Gremio 2 Universidad Catolica 0 In
+0.4
Points
Chance Will Make Playoffs