How are these numbers calculated?

Big Games

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

Week of 11/13100.0*Chance in playoffs100.0*Average seed
Winning 3 Broomsday 7 In
+0.3
Sunny 3 Blades 3 +0.1
+0.0
Week of 11/20100.0*Chance in playoffs100.0*Average seed
Sunny 8 Winning 0 -0.2
Broomsday 2 Blades 4 -0.2
Week of 11/27100.0*Chance in playoffs100.0*Average seed
Sunny 8 Winning 1 -0.3
Broomsday 2 Blades 2 -0.1
Points
Chance Will Make Playoffs