How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 3/27100.0*Chance in playoffs100.0*Average seed
Frost Heaves 107 Rainmen 98 -21.8
-0.2
Rainmen 98 Cavalry 104 -4.4
-0.1
Frost Heaves 133 GreenHawks 119 -1.0
-0.0
Razorsharks 117 Millrats 107 -0.7
-0.0
Week of 4/3100.0*Chance in playoffs100.0*Average seed
Frost Heaves 97 Razorsharks 109 In
+0.3
Rainmen 109 Kebs 86 +4.5
+0.0
Stampede 104 Rainmen 123 +4.1
+0.0
Week of 4/10None
Games Above .500
Chance Will Make Playoffs