How are these numbers calculated?

Big Games

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

Week of 11/23100.0*Chance in playoffs100.0*Average seed
Brandon 60 Chris 37 In
+0.2
Jake 54 Josh 45 -0.0
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Jake 63 Bill 34 -0.1
Brandon 60 Kyle 48 +0.1
If winner is:HomeTieAway
Week of 12/7100.0*Chance in playoffs100.0*Average seed
Brandon vs Josh+0.3+0.3-0.5
Jake vs Yarroch-0.1+0.3+0.3

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs123456789101112Count
20-21In10045,506,535*
190-1-0In227822,642,465
Total:In742668,149,000

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs