How are these numbers calculated?

Big Games

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

Week of 9/20100.0*Chance in playoffs100.0*Average seed
Madison 1 North Texas 0 +28.7
+0.6
Chattanooga 2 Orlando B 1 -5.4
-0.1
Tucson 0 Richmond 0 +4.9
+0.1
Tucson 2 Greenville 3 +1.9
-0.1
Greenville 3 Toronto II 1 -0.7
-0.0
Lansing 1 South Georgia 1 +0.4
-0.0
Week of 9/27100.0*Chance in playoffs100.0*Average seed
Chattanooga 2 Richmond 1 -19.0
-0.2
Toronto II 1 South Georgia 0 +1.2
+0.0
Tucson 1 Madison 1 -0.6
-0.0
Greenville 0 Orlando B 1 +0.1
Week of 10/4100.0*Chance in playoffs100.0*Average seed
Chattanooga 1 Toronto II 1 In
+0.4
Lansing 0 Madison 1 In
+0.5
South Georgia 3 Greenville 1 +0.1
Points
Chance Will Make Playoffs