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 +18.5
+1.4
John 154.1 Roger 134.58 -1.2
-0.1
Bobby 142.28 Chuck 132.94 -0.9
Steve 99.14 Nick 116.44 -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
Andy 104.98 Jordan 102.08 +13.9
+1.1
Evan 143.84 Steve 75.88 +0.4
Nana 112.14 Roger 81.58 -0.2
Ryan 112.9 Chuck 89.4 +0.1
Bobby 161.38 Chris 103.5 +0.1
Week of 11/27100.0*Chance in playoffs100.0*Average seed
Chuck 120.9 Andy 138.94 +23.8
+1.4
Bobby 125.44 Nana 115.06 -4.4
-0.1
Chris 102.76 Ryan 137 -1.6
-0.1
John 122.74 Evan 127.94 +0.6
+0.1
Steve 143.7 Jordan 119.8 -0.6
Roger 71.16 Nick 131.04 -0.6
If winner is:HomeAway
Andy vs ChrisIn-21.1
+1.6-1.6
Jordan vs John+9.5-9.5
+0.2-0.2
Steve vs Chuck-9.3+9.3
-0.2+0.2
Nana vs Nick+3.5-3.5
+0.1-0.1
Bobby vs Ryan-2.8+2.8
-0.1+0.1
Evan vs Roger+2.6-2.6
+0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
81-0In6274319410,927,606
70-157.8%271831311210,931,138
Total:78.9%3132213111615621,858,744
Games Above .500
Chance Will Make Playoffs