How are these numbers calculated?

Big Games

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

Week of 7/20100.0*La Liga100.0*Average seed
Santander 1 Rayo 2 -14.8
-0.2
Elche 2 Oviedo 1 -14.7
-0.2
Zaragoza 2 Ponferradina 1 -0.3
Week of 8/7100.0*La Liga100.0*Average seed
Deportivo 2 Fuenlabrada 1 No
-1.3
Points
Chance Will Win Championship