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
Alter 85.9 Swikart 127.7 -1.5
-0.2
Keating 59.1 Petrella 131.6 +1.1
Del Cueto 85.2 Swords 117.2 +0.5
+0.1
Brockett 106 Illgen 50.4 +0.2
-0.1
Larson 100.2 Mendoza 124.8 +0.2
Crump 101 Shroff 90.6 -0.1
Week of 11/26100.0*Chance in playoffs100.0*Average seed
Keating 118.4 Del Cueto 112.4 -0.7
+0.2
Alter 89.4 Brockett 93.7 -0.7
-0.4
If winner is:HomeAway
Week of 12/3100.0*Chance in playoffs100.0*Average seed
Alter vs Del CuetoIn-2.7
+0.3-0.3
Keating vs Crump-2.7In
-0.1+0.1

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
71-0In1007,071,469
60-194.7%425357,068,875
Total:97.3%7127314,140,344
Games Above .500
Chance Will Make Playoffs