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 -18.7
-1.6
Wil 42 Jerry 44 +2.3
+0.1
Marianna 50 Tyler 48 -1.2
AM 59 Grace 65 -0.5
Tim 72 Ed 17 +0.4
Drew 47 Tom 48 -0.1
Jess 48 Lori 51 -0.1
Week of 11/21100.0*Chance in playoffs100.0*Average seed
Rachel 57 Ed 83 Out
-1.3
Greg 77 Grace 41 -2.0
-0.1
AM 81 Tyler 54 -1.7
+0.1
Jess 56 Jerry 49 -1.3
-0.2
Wil 61 Tom 49 -0.5
-0.1
Marianna 76 Lori 62 +0.4
+0.1
If winner is:HomeAway
Week of 11/28100.0*Chance in playoffs100.0*Average seed
Rachel vs Grace+0.7-0.7
Greg vs Tyler+0.2-0.2
Drew vs Ed+0.2-0.2
Jess vs Tom-0.2+0.2
AM vs Lori+0.1-0.1

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
51-0-0Out522393410,929,894
40-1-0Out554510,928,830
Total:Out21120452221,858,724
Games Above .500
Chance Will Make Playoffs