How are these numbers calculated?

Big Games

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

Week of 11/25100.0*Chance in playoffs100.0*Average seed
Pat 90.94 Dylan 85.94 +32.0
+1.1
Shawn 107.62 Clib 112.92 +6.2
+0.1
Gallo 114.68 Pepsin 119.68 -3.7
-0.1
Carlo 117.16 Tuck 88.24 -3.6
-0.1
Chris 93.08 Alex 120.12 -0.7
-0.1
Week of 12/2100.0*Chance in playoffs100.0*Average seed
Chris 80.94 Pat 71.1 -31.4
-1.2
Carlo 117.24 Pepsin 97.66 +15.1
+0.2
Dylan 100.98 Tuck 79.22 -12.3
-0.2
Alex 105.62 Clib 64.62 -2.6
-0.1
Gallo 95.04 Shawn 83.6 -1.6
-0.3
Games Above .500
Chance Will Make Playoffs