How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Chance in playoffs100.0*Average seed
Mark Sellers 141.5 Tom 72.5 -15.4
-1.0
Greg 89.5 Dan 107.5 +2.5
+0.1
Forrest 88.5 Kaitlyn 62.5 +1.9
+0.1
Kelsey 98.5 Ben 109.5 +1.4
+0.1
Kyle 106.5 Mark 52.5 -0.9
-0.1
Doug 76 Lisa 83 +0.6
+0.2
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Kelsey 92 Tom 109.5 In
+1.4
Greg 112.5 Lisa 108 -4.7
-0.2
Mark Sellers 92.5 Kaitlyn 91.5 -1.1
-0.1
Forrest 120.5 Dan 102 +1.0
+0.1
Doug 96.5 Mark 45 -0.7
-0.2
Kyle 112.5 Ben 100.5 -0.1
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Tom vs Kyle+0.6-0.6
Dan vs Mark Sellers+0.4-0.4
Ben vs Doug+0.3-0.3
Mark vs Greg+0.2-0.3
Kaitlyn vs Kelsey-0.1+0.1
Lisa vs Forrest-0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
81-0-0In2550257,714,008
70-1-0In1950317,712,720
Total:In1334381615,426,728
Games Above .500
Chance Will Make Playoffs