How are these numbers calculated?

Big Games

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

Week of 4/26100.0*Average seed
The Strongest 2 Quilmes 1 +0.1
Week of 5/3None
Week of 5/10100.0*Average seed
Sao Paulo 3 The Strongest 0 +0.3
Quilmes 1 Universidad de Chile 1 +0.1
Chance Will Make Playoffs