How are these numbers calculated?

Big Games

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

Week of 9/18100.0*Average seed
St. Louis 2 Aztex 1 -0.3
Week of 9/25100.0*Average seed
Aztex 4 St. Louis 2 +0.5
Miami FC 1 Rhinos 0 +0.4
RailHawks 3 Aztex 1 -0.2
Week of 10/2100.0*Average seed
St. Louis 1 Rhinos 2 -0.8
Impact 2 Aztex 0 -0.7
Points
Chance Will Make Playoffs