How are these numbers calculated?

Big Games

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

Week of 11/13100.0*Chance in playoffs100.0*Average seed
Andy 94.74 Evan 82.96 -3.5
-0.4
Steve 99.14 Nick 116.44 -0.6
-0.1
John 154.1 Roger 134.58 -0.6
-0.2
Bobby 142.28 Chuck 132.94 -0.4
+0.0
Jordan 108.14 Ryan 119.84 +0.4
+0.0
Chris 127.42 Nana 180.34 -0.2
+0.1
Week of 11/20100.0*Chance in playoffs100.0*Average seed
Evan 143.84 Steve 75.88 +5.4
+0.6
Nana 112.14 Roger 81.58 -0.1
Week of 11/27100.0*Chance in playoffs100.0*Average seed
John 122.74 Evan 127.94 +16.4
+1.1
Bobby 125.44 Nana 115.06 -3.1
-0.1
Steve 143.7 Jordan 119.8 -0.8
Chuck 120.9 Andy 138.94 -0.8
Roger 71.16 Nick 131.04 +0.5
Chris 102.76 Ryan 137 -0.1
If winner is:HomeAway
Evan vs Roger+19.5Out
+1.3-1.3
Steve vs Chuck-4.9+12.5
-0.1+0.3
Jordan vs John+8.9-6.7
+0.1-0.0
Nana vs Nick+2.6-3.5
+0.1-0.1
Andy vs Chris-1.2+4.1
-0.0+0.1
Bobby vs Ryan-3.0+2.2
-0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
71-039.0%041124372434,074,659
60-1Out04643234,074,341
Total:19.5%026121914321668,149,000
Games Above .500
Chance Will Make Playoffs