How are these numbers calculated?

Big Games

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

Week of 11/14100.0*Chance in playoffs100.0*Average seed
Greg 71 Rachel 46 -16.4
-1.3
Marianna 50 Tyler 48 -1.2
Wil 42 Jerry 44 +0.7
+0.0
AM 59 Grace 65 -0.4
Jess 48 Lori 51 -0.3
Tim 72 Ed 17 +0.3
+0.1
Drew 47 Tom 48 -0.1
Week of 11/21100.0*Chance in playoffs100.0*Average seed
Rachel 57 Ed 83 Out
-1.1
Greg 77 Grace 41 -0.9
Wil 61 Tom 49 -0.8
-0.1
Jess 56 Jerry 49 -0.7
-0.3
AM 81 Tyler 54 -0.3
+0.1
Marianna 76 Lori 62 +0.1
+0.0
If winner is:HomeAway
Week of 11/28100.0*Chance in playoffs100.0*Average seed
Rachel vs Grace+0.7-0.3
Greg vs Tyler+0.1-0.4
Drew vs Ed+0.1-0.1
Jess vs Tom-0.1+0.1
AM vs Lori+0.0-0.1

What If

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

100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs1234567891011121314Count
51-0-0Out417314717,986,374
40-1-0Out811943,730,646
Total:Out159711461,717,020
Games Above .500
Chance Will Make Playoffs