How are these numbers calculated?

Big Games

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

Week of 4/14100.0*Chance in playoffs100.0*Average seed
Chivas Guadalajara 0 Lanus 0 -15.9
-0.3
Caracas 1 Everton 0 -0.2
-0.0
Week of 4/21None
Week of 4/28100.0*Chance in playoffs100.0*Average seed
Everton 1 Chivas Guadalajara 1 In
+0.3
Lanus 1 Caracas 1 +0.3
Points
Chance Will Make Playoffs