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 McMurray 44 North Dakota 38 +0.2
Tucson 44 D.C. 27 -0.2
Week of 10/26100.0*Average seed
San Antonio 56 Fort McMurray 43 -0.8
Seattle 69 Tucson 73 -0.2
Corpus Christi 45 Los Angeles 60 -0.1
Week of 11/2None
Games Above .500
Chance Will Make Playoffs