How are these numbers calculated?

Big Games

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

Week of 3/23100.0*Chowder Cup100.0*Average seed
PWS 1 Eagles 6 +7.3
+0.2
SilverBullets 4 SpruceStTavern 6 +5.3
+0.1
Week of 3/29100.0*Chowder Cup100.0*Average seed
Icemen 1 SilverBullets 2 No
-0.2
SpruceStTavern 9 Eagles 3 No
-0.2
Week of 4/8None
Points
Chance Will Make Playoffs