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
Jordan 108.14 Ryan 11 -1.2
-0.6
Steve 99.14 Nick 11 +0.6
+0.1
John 154.1 Roger 11 +0.5
+0.1
Andy 94.74 Evan 11 +0.2
Chris 127.42 Nana 11 -0.2
Bobby 142.28 Chuck 11 +0.0
Week of 11/20100.0*Chance in playoffs100.0*Average seed
Ryan 11 Chuck 20 -10.7
-1.4
Ryan 11 John 20 -9.7
-1.1
Evan 11 Steve 20 +0.3
Nana 11 Roger 20 -0.1
Bobby 11 Chris 20 -0.2
Week of 11/27100.0*Chance in playoffs100.0*Average seed
Chris 11 Ryan 27 +38.1
+1.0
John 11 Evan 27 -4.1
-0.1
Chuck 11 Andy 27 +1.3
Bobby 11 Nana 27 -1.3
-0.2
Roger 11 Nick 27 +0.8
Steve 11 Jordan 27 +0.1
Games Above .500
Chance Will Make Playoffs