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*Chance wins title100.0*Average seed
Home 1 Geylang 1 -5.1
-0.0
Sengkang 0 SAFFC 2 -0.0
Week of 10/18100.0*Chance wins title100.0*Average seed
Balestier 0 Geylang 1 +19.3
+0.3
Home 1 SAFFC 2 +13.7
Week of 10/25100.0*Chance wins title100.0*Average seed
Geylang 3 Jurong 0 Yes
+0.4
Gombak 1 Home 0 +21.2
+0.3
SAFFC 5 Woodlands 0 -2.7
-0.1
Points
Chance Will Win Championship