How are these numbers calculated?

Big Games

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

Week of 1/27100.0*Average seed
Milford 9 Pinckney 21 -0.2
Milford 13 Brighton 17 -0.2
Pinckney 3 Hartland 27 +0.1
Week of 2/4100.0*Average seed
Pinckney 27 Milford 3 -0.1
Week of 2/10100.0*Average seed
South Lyon 24 Milford 6 -0.1
Games Above .500
Chance Will Win Championship