How are these numbers calculated?

Big Games

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

Week of 8/18None
Week of 8/23100.0*Average seed
Nordekes 4 Hellfish 4 +0.2
DudleyAvalanche 1 LordStanleysCup 6 +0.0
Week of 8/31100.0*Average seed
PondScum 6 UnionTavern 0 +0.8
Nordekes 5 LordStanleysCup 3 +0.5
Hellfish 3 Jackals 2 -0.4
Points
Chance Will Make Playoffs