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*Chance wins title100.0*Bottom Half100.0*Average seed
Tall Boys 120 En Fuego 71 +0.2
-0.5
+0.0
Used To Be Good 49 Size Matters 47 +0.1
-0.1
Knights 56 Migos 68 -0.1
-0.1
Free Ballin 58 Austin Tropics 49 -0.4
Week of 3/13100.0*Chance wins title100.0*Bottom Half100.0*Average seed
Migos 72 Tall Boys 74 +1.5
-2.5
+0.2
Injured Reserves 73 Knights 60 -0.1
+0.1
Size Matters 78 Austin Tropics 52 +0.1
-0.2
En Fuego 42 Used To Be Good 81 -0.1
+0.2
Week of 3/20100.0*Chance wins title100.0*Bottom Half100.0*Average seed
Tall Boys 73 Injured Reserves 66 +0.5
+0.6
+0.1
Migos 58 Used To Be Good 48 -0.1
Games Above .500
Chance Will Win Championship