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
Fort Worth 31 San Antonio 40 +0.1
Tucson 44 D.C. 27 -0.1
Week of 10/26100.0*Average seed
San Antonio 56 Fort McMurray 43 +0.6
Seattle 69 Tucson 73 -0.1
Corpus Christi 45 Los Angeles 60 -0.1
Week of 11/2100.0*Average seed
New York 35 Tucson 62 -0.4
Fort McMurray 54 Fort Worth 35 +0.0
Games Above .500
Chance Will Make Playoffs