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
Atlas 3 Boca Juniors 1 -19.2
-0.5
Colo-Colo 2 Union Maracaibo 0 -11.0
-0.1
Week of 4/15None
Week of 4/22100.0*Chance in playoffs100.0*Average seed
Boca Juniors 3 Union Maracaibo 0 +27.9
+0.3
Colo-Colo 1 Atlas 1 -20.4
-0.2
Points
Chance Will Make Playoffs