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
Ben 120 Charlie 135 -0.9
-0.3
Tim 105 David 86 +0.7
+0.1
Nathan 149 Jeff 97 +0.7
+0.1
Clint 170 Travis 131 -0.1
Week of 11/26None
Games Above .500
Chance Will Make Playoffs