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
Chris 113.8 Brian 95.57 -21.0
-0.9
Gary 71.98 Nick 104.77 -1.5
-0.1
Dan 105.62 Mike 130.94 +1.0
Luke 81.92 John 57.61 -0.6
-0.1
Kevin 90.5 Ira 93.18 -0.4
Week of 11/29100.0*Chance in playoffs100.0*Average seed
Gary 113.22 Brian 107.49 -20.1
-1.2
Dan 92.9 Nick 86.65 +8.9
+0.1
Ira 78.04 Angelo 152 -4.6
-0.1
Jonny 124.96 Chris 91.8 -4.5
-0.3
Luke 58.97 Mike 114.72 +2.5
+0.2
Kevin 113.42 John 128.3 -1.3
If winner is:HomeAway
Week of 12/6100.0*Chance in playoffs100.0*Average seed
Dan vs Brian-1.4+1.4
Jonny vs Gary-0.1+0.1
Luke vs Nick+0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
61-0Out5029218,999,791
50-1Out50508,999,753
Total:Out251411252517,999,544
Games Above .500
Chance Will Make Playoffs