How are these numbers calculated?

Big Games

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

Week of 4/8100.0*Chance in playoffs100.0*Average seed
Cobreloa 4 Alianza Lima 0 In
Olimpia 4 Gimnasia y Esgrima 1 -11.4
Week of 4/15None
Week of 4/25None
Chance Will Make Playoffs