How are these numbers calculated?

Big Games

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

Week of 8/20100.0*Chance in playoffs100.0*Average seed
BlueFalcons 0 Sharks 4 -0.9
FatHogs 3 GreenBeavers 6 -0.1
-0.5
IceDevils 4 Diablo 7 +0.1
Week of 8/27100.0*Chance in playoffs100.0*Average seed
Express 6 BeerOClock 0 -5.8
FatHogs 1 NESHLNorth 0 In
+0.3
Sharks 1 HardoCity 3 In
+0.2
ClamDiggers 5 IceDevils 0 -1.1
+0.2
Week of 9/4100.0*Chance in playoffs100.0*Average seed
NeverWuzzez 4 ClamDiggers 3 +0.3
DeathKnights 3 ClamDiggers 4 -0.1
Points
Chance Will Make Playoffs