How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Chance in playoffs100.0*Average seed
Jerry 104.48 Dave 177 +23.4
+1.2
John 115.48 Mark 104.94 -2.4
-0.1
CR 107.24 Liam 92.48 -1.4
-0.1
Lawlor 72.12 Valerio 121.6 -0.5
Crowley 193.82 Sam 122.22 +0.5
+0.0
Jamie 135.68 Tyler 94.98 -0.3
-0.0
Week of 11/26100.0*Chance in playoffs100.0*Average seed
Dave 137.48 Valerio 130.12 +25.4
+1.4
Jerry 149.28 Tyler 99.78 -3.4
-0.2
Jamie 120.12 Sam 113.58 +3.4
+0.1
CR 103.74 Mark 148.94 +2.3
+0.1
Lawlor 121.64 John 108.92 +0.6
Crowley 161.32 Liam 129.54 -0.4
-0.1
If winner is:HomeTieAway
Week of 12/3100.0*Chance in playoffs100.0*Average seed
Jerry vs Sam+3.1+3.1-3.2
-0.1+0.3+0.1
Dave vs TylerIn-0.7-3.2
+1.0-0.8-1.0
John vs Valerio+2.6+1.7-2.6
+0.2+0.2-0.3
Lawlor vs CR-1.6+0.5+1.6
-0.3+0.2+0.3
Crowley vs Mark-0.1+0.0+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
81-0-0In2156194012,728,942
7.50-0-196.2%727392340256,300
70-1-093.742139296012,732,702
Total:96.8%10302022153025,717,944
Games Above .500
Chance Will Make Playoffs