How are these numbers calculated?

Big Games

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

Week of 11/4100.0*Chance in playoffs100.0*Average seed
Dre 72.6 Andrew 102.9 +19.4
+0.8
Carlos 67.7 Dan 103.4 -5.4
-0.2
Richard 118.4 Jeff 72.5 +2.4
Frank 48.2 Sam 79.6 -1.9
-0.1
Omar 75.8 Dorff 104.9 +1.4
+0.1
Mully 136.8 Rick 91.3 -0.5
-0.1
Week of 11/11100.0*Chance in playoffs100.0*Average seed
Andrew 60 Omar 71 -13.7
-0.6
Dan 88.6 Jeff 140.2 +4.2
+0.1
Sam 61.4 Richard 119.1 +3.3
+0.0
Mully 82.3 Frank 113.4 +0.3
+0.2
Carlos 96.8 Dre 67.2 +0.2
Dorff 30.4 Rick 122.2 -0.0
If winner is:HomeAway
Week of 11/18100.0*Chance in playoffs100.0*Average seed
Dorff vs Andrew-41.2+7.6
-1.1+0.2
Dan vs Mully-6.3+4.4
-0.1+0.1
Rick vs Jeff+3.2-6.5
+0.1-0.1
Sam vs Dre-3.7+5.3
-0.1+0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
61-097.4%083142024,609,440
50-148.6123737144,508,660
Total:89.8%072188229,118,100
Games Above .500
Chance Will Make Playoffs