How are these numbers calculated?

Big Games

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

Week of 11/20100.0*Chance in playoffs100.0*Average seed
Larson 116.3 Mendoza 132 -10.7
-0.3
Crump 110.8 Shroff 119.6 +9.2
+0.1
Alter 79.3 Swikart 128.4 +1.1
Del Cueto 107.9 Swords 116.1 -0.6
+0.1
Brockett 94.1 Illgen 106 +0.3
+0.1
If winner is:HomeAway
Week of 11/27100.0*Chance in playoffs100.0*Average seed
Larson vs CrumpIn-17.8
+0.4-0.4
Alter vs Brockett-0.7+0.7
Keating vs Del Cueto+0.1-0.1

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
72-0In29713,376,308
61-194.0%0108466,747,600
50-240.841593,373,220
Total:82.2%723521813,497,128
Games Above .500
Chance Will Make Playoffs