How are these numbers calculated?

Big Games

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

Week of 12/3100.0*Chance in playoffs100.0*Average seed
Alex 101.12 Carlo 66.18 +18.1
+0.5
Chris 78.86 Fred 111.4 +3.8
+0.1
Tuck 62.44 Pepsin 107.54 -3.0
Clib 172.98 Gallo 84.42 +0.2
-0.2
Week of 12/10100.0*Chance in playoffs100.0*Average seed
Alex 70.64 Chris 108.14 Out
-1.2
Gallo 85.88 Tuck 78.32 +1.2
+0.1
Carlo 50.42 Pepsin 112.74 +0.7
+0.0
Clib 96.32 Ryan 81.84 -0.3
Games Above .500
Chance Will Make Playoffs