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 -1.6
-0.2
Madison 1 North Texas 0 Out
Chattanooga 2 Orlando B 1 -0.3
-0.1
Lansing 1 South Georgia 1 +0.3
+0.0
Greenville 3 Toronto II 1 -0.2
+0.1
Tucson 2 Greenville 3 +0.1
Week of 9/27100.0*Chance in playoffs100.0*Average seed
Chattanooga 2 Richmond 1 -0.6
Richmond 1 Toronto II 2 -0.5
Toronto II 1 South Georgia 0 -0.1
Tucson 1 Madison 1 +0.0
Week of 10/4None
Points
Chance Will Make Playoffs