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 +16.7
+1.2
Eric 92.7 Ken 122 -3.4
-0.1
Mike 96.8 Craig 78.6 +2.8
+0.1
Logan 81.5 Kyle 100.7 -0.8
-0.3
Jason 79 Kelly 101.4 +0.2
-0.1
Gerard 122.2 Jon 101.9 -0.1
Week of 11/20100.0*Chance in playoffs100.0*Average seed
Brian 88.1 Eric 86.8 +29.4
+1.3
Ken 144.7 Logan 169.6 +3.5
+0.1
Craig 133.5 Jason 77 -3.3
-0.2
Jon 105.7 Kyle 72.1 +1.8
+0.1
Kelly 95.6 Mike 80.9 -1.3
-0.3
Garrett 117.3 Gerard 119.7 -0.1
+0.0
If winner is:HomeAway
Week of 11/27100.0*Chance in playoffs100.0*Average seed
Brian vs LoganIn-18.0
+1.1-0.6
Kelly vs Jon-23.8+9.4
-0.5+0.2
Jason vs Ken+10.4-5.5
+0.3-0.1
Craig vs Eric+5.1-6.8
-0.3+0.4

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
71-0In594116,444,809
60-149.4%12372425329,835,375
Total:67.4%29381516246,280,184
Games Above .500
Chance Will Make Playoffs