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
Busayo 52.22 Gerrit 74.5 +12.2
+1.1
Tyler 68.62 Tyrone 83.8 +1.0
+0.1
Avi 88.92 Angel 74.84 -0.7
+0.1
Simon 82.92 Jack 99.62 +0.5
-0.1
Walter 101.26 Declan 60.88 -0.3
-0.1
Aidan 92.3 Holden 78.8 +0.1
+0.1
Week of 11/23100.0*Chance in playoffs100.0*Average seed
Simon 105.72 Gerrit 82.32 -26.1
-1.5
Aidan 45.3 Jack 106.52 -1.7
-0.1
Avi 101.44 Tyrone 96.08 -0.7
Tyler 77.12 Holden 81.5 -0.3
Walter 93.98 Angel 74.86 -0.2
Busayo 109.74 Declan 110.76 -0.1
If winner is:HomeAway
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Jack vs TylerOut+0.2
+0.1-0.1
Gerrit vs Aidan+0.2Out
+0.9-0.9
Declan vs Simon+0.2Out
Holden vs Avi-0.1+0.1
-0.2+0.3
Tyrone vs Walter+0.1-0.1
+0.2-0.2
Angel vs Busayo-0.2+0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
71-00.3%043345189,642,280
60-1Out184038129,643,648
Total:0.2%0217272919619,285,928
Games Above .500
Chance Will Make Playoffs