How are these numbers calculated?

Big Games

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

Week of 9/19100.0*Average seed
Sembawang 0 Tampines 7 -0.1
Geylang 5 Balestier 1 -0.1
SAFFC 1 Home 1 +0.0
Week of 9/26100.0*Average seed
Clementi 0 Home 2 +0.2
Week of 10/3100.0*Average seed
Home 2 Sembawang 0 +0.2
Points
Chance Will Win Championship