How are these numbers calculated?

Big Games

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

Week of 3/6100.0*Playoffs100.0*Bottom Half100.0*Average seed
Free Ballin 58 Austin Tropics 49 -0.3
+0.1
Knights 56 Migos 68 Yes
-0.2
Tall Boys 120 En Fuego 71 Yes
-0.1
Used To Be Good 49 Size Matters 47 -0.3
+0.1
-0.2
Week of 3/13100.0*Playoffs100.0*Bottom Half100.0*Average seed
Size Matters 78 Austin Tropics 52 +0.1
Week of 3/20None
Games Above .500
Chance Will Win Championship