How are these numbers calculated?

Big Games

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

Week of 5/1100.0*Average seed
Sevilla 3 Atlético Madrid 1 +0.3
Racing 1 Sevilla 5 +0.2
Athletic Bilbao 1 Mallorca 3 -0.2
Mallorca 1 Real Madrid 4 +0.2
Villarreal 1 Barcelona 4 +0.1
Getafe 1 Sporting de Gij 1 +0.1
Valladolid 0 Getafe 0 +0.0
Almería 4 Villarreal 2 +0.0
Week of 5/8100.0*Average seed
Deportivo 1 Mallorca 0 +0.2
Sevilla 2 Barcelona 3 -0.1
Week of 5/16None
Points
Chance Will Win Championship