How are these numbers calculated?

Big Games

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

Week of 10/5100.0*Average seed
Andrew 86.9 Derek 67.8 +0.1
Mark 95.9 Jake 90.9 -0.1
If winner is:HomeAway
Week of 10/12100.0*Average seed
Michael vs Andrew-0.2+0.1
Mark vs Dan-0.1+0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
138-0In1001,491,150
127-1In81194,261,969
116-2In45554,963,550
105-3In16843,140,809
94-4In4961,191,435
83-5In199281,024
72-6In010040,099
5-6In1006,428*
Total:In505015,376,464

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs