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
Chris 127.42 Nana 11 -18.7
-1.2
Bobby 142.28 Chuck 11 +2.1
+0.1
John 154.1 Roger 11 +1.9
+0.1
Steve 99.14 Nick 11 +1.7
Andy 94.74 Evan 11 +1.2
Jordan 108.14 Ryan 11 -1.0
Week of 11/20100.0*Chance in playoffs100.0*Average seed
Nana 11 Roger 20 -18.9
-1.4
Ryan 11 Chuck 20 -1.4
-0.1
Bobby 11 Chris 20 -1.2
-0.1
Andy 11 Jordan 20 +0.8
+0.1
Ryan 11 John 20 +0.6
Evan 11 Steve 20 +0.4
Week of 11/27100.0*Chance in playoffs100.0*Average seed
Bobby 11 Nana 27 +14.3
+1.2
Chris 11 Ryan 27 -2.4
-0.1
Steve 11 Jordan 27 +2.1
+0.2
Chuck 11 Andy 27 +1.1
-0.1
Roger 11 Nick 27 +1.0
John 11 Evan 27 -0.4
Games Above .500
Chance Will Make Playoffs