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
Sengkang 0 SAFFC 2 -0.4
Woodlands 1 T. Pagar 3 +0.2
Tampines 3 Gombak 1 +0.1
Balestier 5 Clementi 2 +0.1
Week of 10/18100.0*Average seed
Sengkang 2 Clementi 2 -0.3
Woodlands 5 Gombak 1 -0.1
Week of 10/25100.0*Average seed
Sembawang 0 Sengkang 1 +0.7
Gombak 1 Home 0 -0.6
SAFFC 5 Woodlands 0 +0.4
Points
Chance Will Win Championship