How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Average seed
Brett 113.3 Spencer 90 -0.5
Dave 117.8 Clay 66.4 +0.1
Jed 107.4 Packy 98.1 -0.1
Week of 11/26100.0*Average seed
Spencer 86.9 Jed 76.9 +0.6
Winston 80.5 Dane 107.9 -0.2
Alex 120.7 Brett 116.2 -0.2
Packy 101.7 Clay 79.8 +0.1
If winner is:HomeAway
Week of 12/3100.0*Average seed
Clay vs Spencer-1.3+1.2
Dane vs Brett-0.3+0.3

What If

Chances based on how well the Spencer finish out the regular season.   Explain

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
91-0In75257,071,619
80-1In25757,068,725
Total:In3812123714,140,344
Games Above .500
Chance Will Make Playoffs