How are these numbers calculated?

Big Games

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

Week of 8/11100.0*Chowder Cup100.0*Average seed
Hagen 3 MadDogs 6 +28.5
+0.4
Dutchmasters 8 DragonSlayers 6 -0.2
Week of 8/18100.0*Chowder Cup100.0*Average seed
FraminghamJets 9 Hagen 5 +23.5
+0.2
MadDogs 6 Franklin 0 +8.3
+0.1
Franklin 0 MadDogs 1 +8.2
+0.1
Week of 8/25100.0*Chowder Cup100.0*Average seed
MadDogs 4 MoreysTavern 6 -5.6
-0.1
Points
Chance Will Make Playoffs