How are these numbers calculated?

Big Games

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

Week of 7/18100.0*Average seed
Home 9 Gombak 3 +0.3
Tampines 8 Balestier 3 +0.1
T. Pagar 2 Jurong 1 +0.1
Week of 7/25100.0*Average seed
Jurong 2 Home 1 -0.9
Balestier 1 Geylang 0 -0.2
Tampines 1 Sembawang 0 -0.1
Week of 8/1100.0*Average seed
Sengkang 2 Tampines 3 -0.4
Sembawang 1 Balestier 4 -0.3
Points
Chance Will Win Championship