How are these numbers calculated?

Big Games

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

Week of 2/25100.0*Average seed
Mariners 1 Gulls2 0 -0.9
OC1 1 Gulls1 0 +0.1
Oilers 1 Ducks 0 +0.0
Week of 3/4100.0*Average seed
Ducks 0 Wave 1 +0.2
Gulls2 0 OC1 1 -0.2
Gulls1 0 OC2 1 +0.1
Games Above .500
Chance Will Make Playoffs