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
Steve 99.14 Nick 116.44 +18.3
+1.3
John 154.1 Roger 134.58 -1.1
Bobby 142.28 Chuck 132.94 -1.0
Andy 94.74 Evan 82.96 -0.2
Chris 127.42 Nana 180.34 -0.2
Jordan 108.14 Ryan 119.84 +0.1
Week of 11/20100.0*Chance in playoffs100.0*Average seed
Nick 105 John 141.3 -14.0
-1.1
Evan 143.84 Steve 75.88 +0.4
Nana 112.14 Roger 81.58 -0.2
Week of 11/27100.0*Chance in playoffs100.0*Average seed
Roger 71.16 Nick 131.04 +27.0
+1.6
Chuck 120.9 Andy 138.94 -4.1
-0.2
Bobby 125.44 Nana 115.06 -4.0
-0.1
Chris 102.76 Ryan 137 -1.6
-0.1
John 122.74 Evan 127.94 +1.0
+0.1
Steve 143.7 Jordan 119.8 -0.6
If winner is:HomeAway
Nana vs Nick-20.7In
-1.8+1.8
Jordan vs John+9.4-9.4
+0.2-0.2
Steve vs Chuck-9.2+9.2
-0.2+0.2
Andy vs Chris-3.6+3.6
-0.2+0.2
Bobby vs Ryan-2.9+2.9
-0.1+0.1
Evan vs Roger+2.6-2.6
+0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
81-0In13393014310,931,073
70-158.5%281831301110,927,671
Total:79.3%7201611111615621,858,744
Games Above .500
Chance Will Make Playoffs