How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Chance in playoffs100.0*Average seed
Blake 76.28 Brad 89.6 +1.0
+0.6
Josh 101.2 Gravy 100.68 +0.4
Luke 73.14 Brian 103.58 +0.3
-0.1
Dan 113.84 Jon 90.22 -0.2
+0.1
Niphon 166.92 Chris 137.64 +0.1
Week of 11/25100.0*Chance in playoffs100.0*Average seed
Brad 86.98 Chris 96.38 Out
-0.8
Blake 95.42 Gravy 109 -0.6
-0.1
Dan 85.22 Josh 113.24 +0.4
Kashif 129.46 Luke 104.9 -0.2
+0.1
Jon 109 Faisal 59.54 +0.2
Niphon 116.9 Brian 132.26 -0.2
-0.2
If winner is:HomeAway
Week of 12/2100.0*Chance in playoffs100.0*Average seed
Luke vs Brad-0.6+0.6
Blake vs Faisal+0.3-0.2
Josh vs Jon+0.2-0.2
Brian vs Chris-0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
51-0Out1824422513,505,789
40-1Out010013,498,539
Total:Out1412216227,004,328
Games Above .500
Chance Will Make Playoffs