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
Justin 73 Riley 130.16 +0.7
+0.6
Eric 95.94 Tom K 95.72 +0.4
-0.1
Jenn 121.52 Dave 114.46 +0.0
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Jenn 100.28 Tom K 107.62 -13.5
-0.9
Dave 58.5 Riley 106.56 +2.6
+1.0
Eric 74.36 Shawn 103.94 -0.2
Erica 104.54 Tom H 64.7 -0.1
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Jenn vs RileyOut+33.1
-1.2+2.1
Justin vs Tom K+13.8Out
+0.8-1.1
Eric vs Ethan-0.4+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
61-051.6%524810,815,860
50-1Out8713019,384,356
Total:18.5%18738030,200,216
Games Above .500
Chance Will Make Playoffs