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
Niphon 166.92 Chris 137.64 +12.9
+1.2
Luke 73.14 Brian 103.58 +1.9
+0.1
Josh 101.2 Gravy 100.68 +1.7
Dan 113.84 Jon 90.22 -1.2
-0.1
Blake 76.28 Brad 89.6 +0.7
+0.1
Kashif 103.96 Faisal 87.34 -0.4
Week of 11/25100.0*Chance in playoffs100.0*Average seed
Niphon 116.9 Brian 132.26 -1.0
-0.8
Blake 95.42 Gravy 109 -0.8
+0.1
Dan 85.22 Josh 113.24 +0.5
Brad 86.98 Chris 96.38 -0.3
-0.2
Kashif 129.46 Luke 104.9 +0.1
-0.1
If winner is:HomeAway
Week of 12/2100.0*Chance in playoffs100.0*Average seed
Kashif vs DanIn-0.2
-0.2+0.2
Niphon vs GravyIn-0.2
+1.1-1.1
Blake vs Faisal-0.2+0.2
-0.3+0.2
Brian vs Chris+0.2-0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
81-0In75241013,501,507
70-199.6%314313616013,502,821
Total:99.8%391916188027,004,328
Games Above .500
Chance Will Make Playoffs