How are these numbers calculated?

Big Games

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

Week of 4/2100.0*Chance in playoffs100.0*Average seed
Newell's Old Boys 3 Deportivo Lara 1 +27.5
+0.7
Universidad de Chile 0 Olimpia 1 +1.0
+0.0
Week of 4/9100.0*Chance in playoffs100.0*Average seed
Deportivo Lara 2 Universidad de Chile 3 -18.4
-0.2
Olimpia 4 Newell's Old Boys 1 -18.4
-0.6
Week of 4/16None
Points
Chance Will Make Playoffs