How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 11/19100.0*Chance in playoffs100.0*Average seed
Tim 105 David 86 -15.0
-0.6
Nathan 149 Jeff 97 +10.5
+0.1
Ben 120 Charlie 135 +0.4
+0.1
Clint 170 Travis 131 -0.4
-0.1
Stephen 129 Mat 89 -0.3
-0.1
Week of 11/26100.0*Chance in playoffs100.0*Average seed
David 137 Jeff 168 Out
-1.0
Tim 126 Mat 110 -9.2
-0.3
Nathan 194 Stephen 207 -9.2
-0.3
Games Above .500
Chance Will Make Playoffs