How are these numbers calculated?

Big Games

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

Week of 11/16100.0*Chance in playoffs100.0*Average seed
Avi 88.92 Angel 74.84 -12.5
-1.2
Busayo 52.22 Gerrit 74.5 -0.9
-0.2
Tyler 68.62 Tyrone 83.8 +0.9
+0.1
Aidan 92.3 Holden 78.8 +0.4
+0.1
Simon 82.92 Jack 99.62 +0.3
-0.1
Walter 101.26 Declan 60.88 -0.1
Week of 11/23100.0*Chance in playoffs100.0*Average seed
Walter 93.98 Angel 74.86 Out
-1.3
Aidan 45.3 Jack 106.52 -0.8
-0.1
Avi 101.44 Tyrone 96.08 -0.6
+0.2
Tyler 77.12 Holden 81.5 -0.4
Simon 105.72 Gerrit 82.32 -0.4
+0.1
If winner is:HomeAway
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Angel vs Busayo+0.8-0.8
Jack vs Tyler+0.3-0.3
Gerrit vs Aidan-0.2+0.2
Tyrone vs Walter-0.1+0.1
Holden vs Avi-0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
61-0Out2123342129,644,327
50-1Out1750339,641,601
Total:Out161629311719,285,928
Games Above .500
Chance Will Make Playoffs