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 -24.2
-1.1
Forrest 88.5 Kaitlyn 62.5 +3.2
+0.1
Greg 89.5 Dan 107.5 +2.3
+0.2
Kelsey 98.5 Ben 109.5 +1.8
+0.1
Kyle 106.5 Mark 52.5 -0.4
-0.0
Doug 76 Lisa 83 +0.4
+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 -3.9
-0.2
Mark Sellers 92.5 Kaitlyn 91.5 -2.4
-0.1
Forrest 120.5 Dan 102 +1.1
Doug 96.5 Mark 45 -0.4
-0.0
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+0.9-0.6
Dan vs Mark Sellers+0.6-0.3
Mark vs Greg+0.5-0.1
Ben vs Doug+0.2-0.2

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
81-0-0In17533019,332,467
70-1-0In3316630,806,941
Total:In722304150,139,408
Games Above .500
Chance Will Make Playoffs