How are these numbers calculated?

Big Games

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

Week of 3/18100.0*Chance in playoffs100.0*Average seed
Ireland 3 TKE-A 0 In
+0.5
Sammy 2.0 1 No Chris 1 +1.4
+0.1
Raiders 0 Roller Dads 1 -0.5
Week of 3/25100.0*Chance in playoffs100.0*Average seed
9 Ball 1 Ireland 7 +0.4
Roller Dads 4 Sammy 2.0 3 -0.2
Raiders 2 TKE-A 0 -0.2
Week of 4/1100.0*Chance in playoffs100.0*Average seed
Flag Broomball 3 Ireland 4 +0.5
Juul 2 Roller Dads 4 -0.3
9 Ball 0 Raiders 4 -0.2
Games Above .500
Chance Will Make Playoffs