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
Marianna 50 Tyler 48 +13.3
+1.0
Greg 71 Rachel 46 -1.1
-0.1
Jess 48 Lori 51 -1.1
Wil 42 Jerry 44 +0.9
+0.1
Tim 72 Ed 17 +0.7
AM 59 Grace 65 -0.2
Drew 47 Tom 48 -0.2
Week of 11/21100.0*Chance in playoffs100.0*Average seed
Marianna 76 Lori 62 In
+1.3
Greg 77 Grace 41 -2.5
-0.2
Wil 61 Tom 49 -2.2
+0.1
Jess 56 Jerry 49 -2.1
-0.1
AM 81 Tyler 54 -0.8
-0.1
Rachel 57 Ed 83 -0.6
If winner is:HomeAway
Week of 11/28100.0*Chance in playoffs100.0*Average seed
Marianna vs Jerry+2.0-0.7
Greg vs Tyler-0.2+0.6
Rachel vs Grace+0.4-0.2
AM vs Lori-0.2+0.3
Jess vs Tom+0.2-0.1

What If

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

100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs1234567891011121314Count
81-0-0In333923616,227,254
70-1-0In029273919345,489,766
Total:In91113222914361,717,020
Games Above .500
Chance Will Make Playoffs