How are these numbers calculated?

Big Games

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

Week of 8/3100.0*Average seed
Jurong 1 Home 4 -0.3
Geylang 1 T. Pagar 0 -0.1
Week of 8/10100.0*Average seed
Sengkang 2 Jurong 1 -0.1
Geylang 0 Tampines 0 -0.0
Week of 8/18100.0*Average seed
Tampines 1 Clementi 1 +0.2
Points
Chance Will Win Championship