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
Larson 100.2 Mendoza 124.8 -7.8
-0.4
Brockett 106 Illgen 50.4 -5.1
-0.1
Keating 59.1 Petrella 131.6 +1.3
+0.1
Del Cueto 85.2 Swords 117.2 +0.8
Crump 101 Shroff 90.6 -0.3
-0.1
Alter 85.9 Swikart 127.7 +0.1
Week of 11/26100.0*Chance in playoffs100.0*Average seed
Larson 71.5 Crump 63.9 +0.2
Keating 118.4 Del Cueto 112.4 -0.1
If winner is:HomeAway
Week of 12/3100.0*Chance in playoffs100.0*Average seed
Larson vs Brockett+0.2-0.3
Keating vs Crump+0.2-0.3

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
51-0Out75257,074,267
40-1Out25757,066,077
Total:Out505014,140,344
Games Above .500
Chance Will Make Playoffs