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 +24.9
+1.8
Wil 42 Jerry 44 +1.1
+0.2
Marianna 50 Tyler 48 -0.9
-0.1
AM 59 Grace 65 -0.3
Jess 48 Lori 51 +0.1
Week of 11/21100.0*Chance in playoffs100.0*Average seed
Greg 77 Grace 41 +23.7
+1.6
Wil 61 Tom 49 -1.7
Marianna 76 Lori 62 +1.6
AM 81 Tyler 54 -0.8
-0.2
Rachel 57 Ed 83 -0.4
Jess 56 Jerry 49 -0.4
-0.1
If winner is:HomeAway
Week of 11/28100.0*Chance in playoffs100.0*Average seed
Greg vs TylerIn-4.5
+1.7-1.7
Drew vs Ed-4.5In
-0.2+0.2
Wil vs Tim-4.5In
Jess vs TomIn-4.5
+0.2-0.2
AM vs Lori-0.3+0.3
Rachel vs Grace+0.2-0.2
Marianna vs Jerry-0.2+0.2

What If

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

100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs1234567891011121314Count
7.51-0-0In6253825610,929,560
6.50-1-091.0%164134910,929,164
Total:95.5%3131912112117421,858,724
Games Above .500
Chance Will Make Playoffs