How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Chance in playoffs100.0*Average seed
John 96 BenG 53.9 +11.5
+0.9
Derek 100.5 Manj 60.2 -1.4
-0.1
BenF 96.4 Mitch 101 +1.2
+0.1
Ryan 105.9 Kyle 70.9 +1.1
Phil 70 Jaylen 74 -1.1
-0.2
AndrewL 80.9 AndrewF 99.6 +0.2
-0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Manj 113 John 59.5 -21.3
-1.1
Mitch 100.6 AndrewL 120.7 -2.7
-0.2
AndrewF 70.1 Ryan 92.1 +2.6
+0.1
BenG 80.4 Phil 73 -2.1
-0.1
Derek 123.1 BenF 67 -1.0
-0.1
Kyle 101.5 Jaylen 73.7 -0.4
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
John vs BenF+1.2-1.2
Jaylen vs BenG-0.3+0.3
Ryan vs Mitch-0.3+0.3
AndrewF vs Kyle-0.3+0.3

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
61-0Out255013129,000,494
50-1Out50508,999,050
Total:Out13256312517,999,544
Games Above .500
Chance Will Make Playoffs