How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Chance in playoffs100.0*Average seed
Niphon 82.52 Chris 122.84 +18.0
+0.5
Blake 113.52 Gravy 116.64 -1.4
Kashif 87.34 Jon 98.52 +1.2
Brad 115.76 Dan 96.04 +0.5
-0.2
Luke 210.76 Josh 95.96 -0.5
+0.0
Week of 11/26100.0*Chance in playoffs100.0*Average seed
Blake 100.24 Chris 91.62 -17.6
-0.5
Niphon 135.52 Jon 94.84 -7.2
-0.1
Brad 140.9 Faisal 133.36 -0.7
-0.0
If winner is:HomeAway
Week of 12/3100.0*Chance in playoffs100.0*Average seed
Chris vs Jon+7.8Out
+0.3-0.7
James vs Dan+19.4-8.0
+0.3-0.1
Luke vs Niphon+4.8-9.2
+0.1-0.1
Brad vs Gravy-6.8+3.7
-0.4+0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
71-027.6%423541959,943,230
60-1Out178323,642,570
Total:19.8%317433783,585,800
Games Above .500
Chance Will Make Playoffs