How are these numbers calculated?

Big Games

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

Week of 10/20100.0*Average seed
St. Louis 45 Evansville 38 -0.1
Baltimore 41 London 51 +0.1
Detroit 45 Ohio 58 -0.1
Week of 10/26100.0*Average seed
London 55 Tampa Bay 57 -0.2
Boston 42 St. Louis 37 +0.1
D.C. 52 Ohio 59 -0.0
Evansville 44 Detroit 24 -0.0
Week of 11/2100.0*Average seed
Evansville 41 London 36 -0.1
Games Above .500
Chance Will Make Playoffs