How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Chance in playoffs100.0*Average seed
El Nino' 2 Joes Real BBQ 6 +15.3
+0.6
Hoops 8 AZ Meltdown 1 -9.9
-0.1
Blackout/Redbri 5 Sport Boys 5 -0.5
Week of 12/1None
Points
Chance Will Make Playoffs