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*Average seed
Libertad 0 River Plate 2 -0.1
Week of 4/15100.0*Average seed
River Plate 2 Emelec 0 -0.2
Libertad 1 Deportivo Cali 0 -0.2
Week of 4/25None
Chance Will Make Playoffs