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 -5.8
-0.2
Madison 1 North Texas 0 -4.2
-0.1
Tucson 2 Greenville 3 Out
-0.6
Chattanooga 2 Orlando B 1 -2.0
-0.2
Greenville 3 Toronto II 1 -1.3
+0.1
Lansing 1 South Georgia 1 +0.9
+0.1
Week of 9/27100.0*Chance in playoffs100.0*Average seed
Tucson 1 Madison 1 -0.2
Chattanooga 2 Richmond 1 +0.2
Richmond 1 Toronto II 2 -0.1
Toronto II 1 South Georgia 0 -0.1
Week of 10/4100.0*Chance in playoffs100.0*Average seed
Tucson 1 North Texas 3 -0.6
Points
Chance Will Make Playoffs