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

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
91-0-0In2550257,708,267
80-1-0In75257,718,461
Total:In1225501315,426,728
Games Above .500
Chance Will Make Playoffs