How are these numbers calculated?

Big Games

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

Week of 8/17100.0*Chance in playoffs100.0*Average seed
Beavers 4 FlatPennyBarGrille 8 In
+0.8
RustyBlades 1 ScreaminSeagulls 9 +0.5
Week of 8/25None
Week of 9/2None
Points
Chance Will Make Playoffs