How are these numbers calculated?

Big Games

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

Week of 4/6100.0*Chance in playoffs100.0*Average seed
Universidad Catolica 0 Velez Sarsfield 0 +4.7
+0.2
Union Espanola 1 Caracas 2 -1.9
-0.1
Week of 4/13100.0*Chance in playoffs100.0*Average seed
Caracas 0 Velez Sarsfield 3 -25.9
-0.1
Universidad Catolica 2 Union Espanola 1 In
+0.5
Week of 4/20None
Points
Chance Will Make Playoffs