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
Tucson 0 Richmond 0 -8.5
-0.4
Madison 1 North Texas 0 -3.6
-0.1
Tucson 2 Greenville 3 Out
-0.6
Chattanooga 2 Orlando B 1 -2.6
-0.1
Greenville 3 Toronto II 1 -0.6
+0.0
Lansing 1 South Georgia 1 +0.5
+0.0
Week of 9/27100.0*Chance in playoffs100.0*Average seed
Tucson 1 Madison 1 -0.2
Chattanooga 2 Richmond 1 +0.2
Toronto II 1 South Georgia 0 -0.0
Week of 10/4100.0*Chance in playoffs100.0*Average seed
Tucson 1 North Texas 3 -0.4
Points
Chance Will Make Playoffs