How are these numbers calculated?

Big Games

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

Week of 8/19100.0*Chowder Cup100.0*Average seed
DirtyMikeandtheBoys 3 FraminghamJets 1 +1.1
-0.1
PlanB 3 Winterhawks 3 (ot)-0.3
+0.0
Week of 8/26None
Week of 9/3None
Points
Chance Will Make Playoffs