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
Del Cueto 85.2 Swords 117.2 -1.5
Keating 59.1 Petrella 131.6 +1.5
+0.3
Brockett 106 Illgen 50.4 +0.7
+0.1
Crump 101 Shroff 90.6 +0.4
+0.2
Week of 11/26100.0*Chance in playoffs100.0*Average seed
Petrella 113.1 Swikart 119.1 -0.3
Mendoza 110.4 Illgen 86.1 +0.2
Shroff 97 Swords 104.5 +0.1
If winner is:HomeAway
Week of 12/3100.0*Chance in playoffs100.0*Average seed
Shroff vs Illgen+0.2-0.3
Petrella vs Swords+0.2-0.3

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
61-0Out762420,686,133
50-1Out267420,448,467
Total:Out514941,134,600
Games Above .500
Chance Will Make Playoffs