How are these numbers calculated?

Big Games

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

Week of 10/1100.0*Chance in playoffs100.0*Average seed
Greenville 2 Tucson 2 -3.0
-0.2
Central Valley 0 N Colorado 1 -1.9
+0.1
Chattanooga 3 Charlotte USL 1 -0.4
-0.1
South Georgia 1 Richmond 1 +0.2
North Carolina 1 Omaha 1 +0.0
Week of 10/8100.0*Chance in playoffs100.0*Average seed
N Colorado 2 Tucson 1 -0.4
North Carolina 0 Chattanooga 1 +0.2
Madison 0 Richmond 1 +0.1
Week of 10/15100.0*Chance in playoffs100.0*Average seed
Tucson 1 Madison 1 -0.5
Charlotte USL 5 North Carolina 1 +0.3
Points
Chance Will Make Playoffs