How are these numbers calculated?

Big Games

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

Week of 2/14None
Week of 2/21100.0*Average seed
McKendree 8 Waldorf 4 -0.0
McKendree 5 Waldorf 1 -0.0
Week of 2/28100.0*Average seed
Waldorf 0 Midland 5 -0.4
Northern Illinois 4 Maryville 3 (so)-0.4
Waldorf 5 Midland 3 +0.2
Northern Illinois 5 Maryville 8 +0.1
Points
Chance Will Win Championship