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
Jaguares 1 Internacional 0 -19.0
-0.4
Jorge Wilstermann 0 Emelec 0 +8.6
+0.1
Week of 4/13100.0*Chance in playoffs100.0*Average seed
Internacional 2 Emelec 0 In
+0.5
Jorge Wilstermann 2 Jaguares 1 In
+0.3
Week of 4/20None
Points
Chance Will Make Playoffs