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
Clementi 4 Gombak 3 -0.2
Tampines 2 Sengkang 0 +0.2
SAFFC 6 Sembawang 2 +0.0
Week of 8/10100.0*Average seed
Geylang 0 Tampines 0 +0.1
Sengkang 2 Jurong 1 +0.1
Clementi 2 Woodlands 2 +0.1
Week of 8/18100.0*Average seed
Tampines 1 Clementi 1 +0.2
Points
Chance Will Win Championship