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 +4.3
+0.0
Frost Heaves 133 GreenHawks 119 +1.1
+0.0
Razorsharks 117 Millrats 107 -0.3
-0.0
Week of 4/3100.0*Chance in playoffs100.0*Average seed
Frost Heaves 97 Razorsharks 109 Out
-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