How are these numbers calculated?

Big Games

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

Week of 11/16100.0*Chance in playoffs100.0*Average seed
David 76.82 Jon 66.28 +25.0
+1.5
Justin 72.22 Bhairav 74.1 +4.5
+0.2
Adam 93.22 Jack 58.24 -3.3
-0.2
Jesse 78.46 Jeffrey 69.18 +1.9
+0.1
Tony 109.48 Simon 52.34 +1.5
Anand 76.6 Bryan 32.7 +0.8
Tom 100.32 Ziyi 45 -0.4
Week of 11/23100.0*Chance in playoffs100.0*Average seed
Anand 99.1 David 97.14 -23.6
-1.5
Jack 63.56 Justin 110.76 -3.4
-0.2
Simon 68.28 Bhairav 97 +2.3
+0.1
Ziyi 100.82 Tony 83.04 -2.3
Jeffrey 112.96 Tom 86.92 -1.3
+0.1
Bryan 67.9 Jesse 59.88 -0.3
+0.1
Jon 73.62 Adam 58.82 +0.2
+0.1
If winner is:HomeAway
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Jesse vs David-20.4+37.1
-1.1+2.0
Tom vs Bryan-8.6+11.4
-0.3+0.3
Tony vs Jeffrey+8.1-10.9
+0.1-0.1
Justin vs Jon+4.1-4.1
+0.1-0.1
Adam vs Anand-2.6+2.6
-0.1+0.1
Ziyi vs Simon-0.9+1.2
-0.1+0.2

What If

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

100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011121314Count
71-099.6%143631154021,920,393
60-142.121228321961039,796,627
Total:62.5%513121320211241061,717,020
Games Above .500
Chance Will Make Playoffs