How are these numbers calculated?

Big Games

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

Week of 9/14100.0*Average seed
SAFFC 3 Sinchi 0 +0.6
Albirex 0 Tampines 3 +0.3
Tampines 5 Woodlands 1 +0.2
Woodlands 4 Y. Lions 0 -0.2
Week of 9/21100.0*Average seed
SAFFC 2 T. Pagar 0 +0.6
Y. Lions 7 Sinchi 1 -0.4
Week of 9/29None
Points
Chance Will Win Championship