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
Greenville 3 Toronto II 1 +11.0
+0.4
Tucson 2 Greenville 3 In
+0.4
Madison 1 North Texas 0 -1.1
-0.1
Lansing 1 South Georgia 1 +1.0
+0.1
Chattanooga 2 Orlando B 1 -0.9
Tucson 0 Richmond 0 +0.6
Week of 9/27100.0*Chance in playoffs100.0*Average seed
Greenville 0 Orlando B 1 -0.3
Tucson 1 Madison 1 +0.0
Week of 10/4100.0*Chance in playoffs100.0*Average seed
South Georgia 3 Greenville 1 -0.3
Points
Chance Will Make Playoffs