How are these numbers calculated?

Big Games

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

Week of 4/4100.0*Chance in playoffs100.0*Average seed
Sporting Cristal 2 Estudiantes 2 +11.6
Week of 4/11100.0*Chance in playoffs100.0*Average seed
Santa Fe 2 Sporting Cristal 1 In
Estudiantes 2 Bolivar 1 -0.1
Week of 4/19None
Chance Will Make Playoffs