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
Drew 47 Tom 48 -17.9
-1.5
Marianna 50 Tyler 48 -1.4
-0.1
Tim 72 Ed 17 +1.2
Greg 71 Rachel 46 -1.1
-0.1
Wil 42 Jerry 44 +0.9
+0.1
Jess 48 Lori 51 -0.4
AM 59 Grace 65 -0.2
Week of 11/21100.0*Chance in playoffs100.0*Average seed
Wil 61 Tom 49 -4.3
-0.1
Jess 56 Jerry 49 -3.5
-0.2
Greg 77 Grace 41 -3.2
-0.2
AM 81 Tyler 54 -1.2
-0.1
Marianna 76 Lori 62 +1.1
Rachel 57 Ed 83 -0.2
If winner is:HomeAway
Week of 11/28100.0*Chance in playoffs100.0*Average seed
Drew vs Ed+36.5Out
+1.4-1.6
Wil vs Tim-15.2+11.4
-0.3+0.2
Jess vs Tom+11.4-8.5
Greg vs Tyler-1.7+5.1
-0.1+0.2
AM vs Lori+0.2-0.3

What If

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

100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs1234567891011121314Count
6.51-0-078.8%328482133,115,009
5.50-1-0Out37481528,602,011
Total:42.3%21526111722761,717,020
Games Above .500
Chance Will Make Playoffs