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
John 154.1 Roger 134.58 +21.6
+1.3
Steve 99.14 Nick 116.44 -1.5
-0.1
Bobby 142.28 Chuck 132.94 -1.1
Jordan 108.14 Ryan 119.84 +1.0
+0.0
Andy 94.74 Evan 82.96 -0.7
Chris 127.42 Nana 180.34 -0.5
Week of 11/20100.0*Chance in playoffs100.0*Average seed
Nick 105 John 141.3 +7.3
+0.6
Nana 112.14 Roger 81.58 -0.3
Evan 143.84 Steve 75.88 +0.2
Week of 11/27100.0*Chance in playoffs100.0*Average seed
John 122.74 Evan 127.94 -23.3
-1.4
Bobby 125.44 Nana 115.06 -3.7
-0.2
Roger 71.16 Nick 131.04 -1.2
Chuck 120.9 Andy 138.94 -1.1
-0.1
Steve 143.7 Jordan 119.8 -0.6
Chris 102.76 Ryan 137 -0.3
-0.1
If winner is:HomeAway
Jordan vs JohnOut+36.2
-1.6+1.2
Nana vs Nick+3.0-4.1
+0.2-0.3
Steve vs Chuck-2.0+5.0
-0.1+0.4
Bobby vs Ryan-3.7+2.8
-0.3+0.2
Andy vs Chris-1.3+4.2
-0.1+0.4
Evan vs Roger+2.1-2.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
71-084.6%421342612339,007,813
60-1Out156121329,141,187
Total:48.4%212191513289168,149,000
Games Above .500
Chance Will Make Playoffs