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 11 +10.2
+1.0
Bobby 142.28 Chuck 11 +1.5
+0.1
John 154.1 Roger 11 +1.1
Jordan 108.14 Ryan 11 -0.9
Andy 94.74 Evan 11 +0.5
Chris 127.42 Nana 11 +0.1
Week of 11/20100.0*Chance in playoffs100.0*Average seed
Evan 11 Steve 20 +16.8
+1.4
Ryan 11 Chuck 20 -1.5
Bobby 11 Chris 20 -1.1
-0.1
Andy 11 Jordan 20 +0.4
+0.1
Ryan 11 John 20 +0.4
-0.1
Week of 11/27100.0*Chance in playoffs100.0*Average seed
Steve 11 Jordan 27 -22.7
-1.5
Chris 11 Ryan 27 -3.6
-0.1
Bobby 11 Nana 27 -2.0
-0.2
Chuck 11 Andy 27 +1.4
John 11 Evan 27 -0.8
Roger 11 Nick 27 -0.1
Games Above .500
Chance Will Make Playoffs