How are these numbers calculated?

Big Games

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

Week of 9/29100.0*Average seed
Woodlands 1 Balestier 0 -0.5
SAFFC 4 Tampines 0 +0.0
Sembawang 1 Home 2 +0.0
Sengkang 1 Geylang 2 -0.0
Week of 10/6100.0*Average seed
Gombak 2 T. Pagar 2 +0.1
SAFFC 2 Balestier 2 +0.1
Home 1 Jurong 0 +0.0
Week of 10/16100.0*Average seed
Balestier 0 Gombak 1 -0.5
Jurong 1 Tampines 0 -0.1
Sembawang 3 SAFFC 4 +0.0
Points
Chance Will Win Championship