How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Chance in playoffs100.0*Average seed
Gary 71.98 Nick 104.77 +28.6
+1.1
Chris 113.8 Brian 95.57 +3.9
+0.1
Dan 105.62 Mike 130.94 -2.8
-0.1
Jonny 92.2 Angelo 91.38 +1.2
Kevin 90.5 Ira 93.18 +0.2
Week of 11/29100.0*Chance in playoffs100.0*Average seed
Dan 92.9 Nick 86.65 -26.4
-1.3
Jonny 124.96 Chris 91.8 -8.1
-0.1
Ira 78.04 Angelo 152 -6.7
-0.3
Gary 113.22 Brian 107.49 +5.8
+0.2
Kevin 113.42 John 128.3 +2.8
+0.3
Luke 58.97 Mike 114.72 -1.2
-0.1
If winner is:HomeAway
Week of 12/6100.0*Chance in playoffs100.0*Average seed
Jonny vs Gary-29.7+29.7
-0.2+0.2
Luke vs NickOut+17.5
-1.1+0.6
Kevin vs Mike-3.0+2.2
-0.1+0.1
Chris vs Angelo-0.4+0.4
+0.1-0.1
Dan vs Brian+0.2-0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
71-049.4%016335134,814,990
60-1Out25453019,183,642
Total:31.8%0102242161153,998,632
Games Above .500
Chance Will Make Playoffs