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
Keating 59.1 Petrella 131.6 -11.9
-0.4
Del Cueto 85.2 Swords 117.2 +6.6
+0.1
Brockett 106 Illgen 50.4 -2.8
Larson 100.2 Mendoza 124.8 +1.5
+0.1
Crump 101 Shroff 90.6 -0.8
-0.1
Alter 85.9 Swikart 127.7 +0.7
Week of 11/26100.0*Chance in playoffs100.0*Average seed
Keating 118.4 Del Cueto 112.4 +17.6
+0.4
Alter 89.4 Brockett 93.7 +1.3
Larson 71.5 Crump 63.9 +1.0
If winner is:HomeAway
Week of 12/3100.0*Chance in playoffs100.0*Average seed
Keating vs Crump+26.0-25.5
+0.3-0.3
Alter vs Del Cueto+24.1-24.4
+0.2-0.2

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
61-076.6%17602320,373,255
50-125.1257520,761,345
Total:50.6%8424941,134,600
Games Above .500
Chance Will Make Playoffs