How are these numbers calculated?

Big Games

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

Week of 11/23100.0*Average seed
Duke 143 Skinny Bastards 111 +0.2
SUV 93 Pyledrivers 122 -0.1
Week of 12/7100.0*Average seed
Pyledrivers 135 Docinators 98 +0.2
Tonto 113 Duke 78 -0.0
Games Above .500
Chance Will Make Playoffs