How are these numbers calculated?

Big Games

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

Week of 10/11100.0*Average seed
Balestier 5 Clementi 2 -0.6
Jurong 2 Sembawang 1 +0.1
Tampines 3 Gombak 1 +0.0
Sengkang 0 SAFFC 2 +0.0
Week of 10/18100.0*Average seed
Sengkang 2 Clementi 2 -0.2
Tampines 2 Sembawang 0 +0.1
Week of 10/25100.0*Average seed
Sembawang 0 Sengkang 1 +0.3
Clementi 3 Tampines 4 -0.2
Points
Chance Will Win Championship