How are these numbers calculated?

Big Games

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

Week of 4/22100.0*Chance in playoffs100.0*Average seed
Beastmode 7 Fireballs 5 Out
-1.8
Beastmode 1 Spartans 3 -0.1
Week of 5/5None
Week of 5/6None
Points
Chance Will Make Playoffs