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*Chance in playoffs100.0*Average seed
LordStanleysCup 0 Spitfires 5 -4.7
Misfits 4 BoozeBrothers 1 -0.6
SilverBullets 5 LordStanleysCup 1 -0.2
Week of 8/26None
Week of 9/5None
Chance Will Make Playoffs