How are these numbers calculated?

Big Games

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

Week of 11/4100.0*Chance in playoffs100.0*Average seed
Alex Wax 85.84 Helfman 83.58 -1.9
-0.8
Koop/Rubin 116.5 Hayons 43.86 +0.1
Lew 151.04 Ray 106.16 +0.1
-0.1
Eddie 63.96 Westport 57.96 +0.1
+0.1
Bukantz 102.2 Dammer 110.2 -0.1
Kochen 104.28 Kunal 126 +0.1
If winner is:HomeAway
Week of 11/11100.0*Chance in playoffs100.0*Average seed
Helfman vs Kunal+2.9-2.9
+0.8-0.8
Lew vs Alex Wax+0.4-0.8
-0.1+0.2
Eddie vs Kochen+0.9-0.3
+0.2-0.1
Bukantz vs Ray+0.7-0.5
Westport vs Hayons-0.1+0.1
-0.1+0.1
Koop/Rubin vs Dammer+0.1-0.0
+0.1-0.0

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
104-0In1004,350,948
93-1In2932353011,222,766
82-2100.0%1122838193009,752,460
71-379.400192939183003,228,963
60-48.6018253623600358,647
Total:96.5%2716231510521000028,913,784
Games Above .500
Chance Will Make Playoffs