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*Chance in playoffs100.0*Average seed
Jackals 1 SpruceStreetTavern 1 +5.5
-0.0
Nordiques 5 ScreaminSeagulls 1 In
Icemen 4 JunkyardDogs 4 -0.0
Week of 8/18100.0*Chance in playoffs100.0*Average seed
SpruceStreetTavern 4 BaystateBulldogs 1 +0.3
Week of 8/25None
Points
Chance Will Make Playoffs