How are these numbers calculated?

Big Games

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

Week of 11/13100.0*Chance in playoffs100.0*Average seed
Garrett 91.7 Brian 112.8 -15.5
-1.2
Mike 96.8 Craig 78.6 +3.0
+0.1
Eric 92.7 Ken 122 -2.9
-0.2
Jason 79 Kelly 101.4 -1.7
-0.1
Gerard 122.2 Jon 101.9 -1.7
-0.1
Logan 81.5 Kyle 100.7 -0.2
-0.1
Week of 11/20100.0*Chance in playoffs100.0*Average seed
Garrett 117.3 Gerard 119.7 Out
-0.3
Kelly 95.6 Mike 80.9 -0.7
-0.1
Brian 88.1 Eric 86.8 -0.5
Ken 144.7 Logan 169.6 +0.3
Craig 133.5 Jason 77 -0.1
-0.1
Jon 105.7 Kyle 72.1 -0.0
If winner is:HomeAway
Week of 11/27100.0*Chance in playoffs100.0*Average seed
Garrett vs Kyle+0.5-0.5

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
51-0Out10023,135,520
40-1Out10023,144,664
Total:Out505046,280,184
Games Above .500
Chance Will Make Playoffs