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 -1.4
-0.3
Madison 1 North Texas 0 Out
Chattanooga 2 Orlando B 1 -0.1
-0.0
Tucson 0 Richmond 0 +0.1
Lansing 1 South Georgia 1 -0.0
Tucson 2 Greenville 3 +0.1
Week of 9/27100.0*Chance in playoffs100.0*Average seed
Richmond 1 Toronto II 2 +1.2
Toronto II 1 South Georgia 0 +0.5
Chattanooga 2 Richmond 1 +0.0
Tucson 1 Madison 1 +0.0
Week of 10/4100.0*Chance in playoffs100.0*Average seed
South Georgia 3 Greenville 1 -0.5
Tucson 1 North Texas 3 +0.2
Chattanooga 1 Toronto II 1 -0.1
Points
Chance Will Make Playoffs