How are these numbers calculated?

Big Games

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

Week of 7/30100.0*Average seed
Los Angeles 2 Barracuda FC 1 +0.2
Wilmington 2 Los Angeles 1 -0.2
Charleston 0 Rochester 1 -0.1
Harrisburg 1 Wilmington 2 +0.1
Rochester 0 Charlotte 3 +0.1
Los Angeles 1 Barracuda FC 1 -0.1
Harrisburg 0 FC New York 0 +0.0
Week of 8/6100.0*Average seed
Barracuda FC 3 Los Angeles 0 -0.2
Charlotte 0 Harrisburg 1 -0.1
FC New York 2 Rochester 1 +0.1
Week of 8/13None
Points
Chance Will Make Playoffs