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
Etomi 74 Bersin 78 +0.4
+0.5
Ellerbe 89 Segal 90 In
-0.0
Lankford 99 Henderson 85 -0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Bersin 78 Lankford 84 -0.9
Segal 72 Fornshell 56 -0.0
If winner is:HomeTieAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Bersin vs Anderson+0.1+0.1-0.2
Li vs Segal-0.2+0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
8.5-9In10040,599,406*
80-1-0In7621312,163,034
Total:In955152,762,440

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs