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
Justin 72.22 Bhairav 74.1 -20.9
-1.4
Jesse 78.46 Jeffrey 69.18 +2.2
+0.1
Adam 93.22 Jack 58.24 -1.8
-0.1
Tony 109.48 Simon 52.34 +1.1
Anand 76.6 Bryan 32.7 +0.9
+0.1
Tom 100.32 Ziyi 45 -0.5
Week of 11/23100.0*Chance in playoffs100.0*Average seed
Jack 63.56 Justin 110.76 +20.7
+1.5
Ziyi 100.82 Tony 83.04 -3.8
-0.1
Simon 68.28 Bhairav 97 +3.8
+0.1
Anand 99.1 David 97.14 +2.4
Jon 73.62 Adam 58.82 +0.6
+0.1
Bryan 67.9 Jesse 59.88 -0.5
-0.1
Jeffrey 112.96 Tom 86.92 -0.4
If winner is:HomeAway
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Justin vs Jon+38.7-38.7
+2.0-2.0
Tom vs Bryan-5.4+5.4
-0.2+0.2
Tony vs Jeffrey+5.1-5.1
Jesse vs David+4.3-4.3
+0.2-0.2
Adam vs Anand-1.7+1.7
-0.1+0.1
Ziyi vs Simon-1.5+1.5
-0.2+0.2

What If

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

100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011121314Count
71-099.8%173830122010,281,865
60-122.516162628195010,290,475
Total:61.1%8191699131493020,572,340
Games Above .500
Chance Will Make Playoffs