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
Marauders 2 BluesBrothers 6 -0.8
-0.2
Brewskis 4 TheFreeAgents 2 +0.5
Week of 8/18100.0*Chance in playoffs100.0*Average seed
Brewskis 3 BluesBrothers 4 Out
Marauders 1 Hansons 4 Out
Week of 8/25None
Points
Chance Will Make Playoffs