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
Isaac 53 Spencer 88 +2.6
+0.9
Nonnie 85 Brenna 96 +2.1
-0.2
Jake 117 Nick 98 +0.9
Graham 99 Scott 84 +0.1
+0.0
Kelsie 68 Kara 89 +0.1
Dar 96 Luke 52 -0.1
Rodney 125 Dave 99 -0.2
If winner is:HomeAway
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Graham vs Spencer-6.9+33.0
-0.4+1.8
Dave vs Nonnie+2.6-6.8
+0.0-0.1
Nick vs Poppa-2.5+2.2
-0.1+0.1
Isaac vs Scott+2.1-1.5
+0.4-0.3
Rodney vs Brenna+1.5-1.1
+0.2-0.1
Dar vs Kelsie-0.2+0.4
-0.2+0.4

What If

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

100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs12345678910111213141516Count
72-0-094.5%8662061,420,540
61-1-024.022253203010,473,593
50-2-0Out21642382017,662,875
Total:13.1%049201626221029,557,008
Games Above .500
Chance Will Make Playoffs