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
Li 69 Anderson 58 -0.1
Ellerbe 89 Segal 90 In
+0.3
Lankford 99 Henderson 85 -0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Segal 72 Fornshell 56 +0.2
Bersin 78 Lankford 84 -0.1
If winner is:HomeTieAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Li vs Segal-0.2+0.2+0.2
Ellerbe vs Lankford+0.2+0.2-0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
10.5-11In1008,070,719*
100-1-0In56447,908,769
Total:In782215,979,488

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs