How are these numbers calculated?

Big Games

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

Week of 5/7100.0*Average seed
Roda 1 Willem II 0 -0.6
Excelsior 3 Feyenoord 0 -0.4
Heracles 4 ADO 0 +0.2
Groningen 1 PSV 1 -0.1
Week of 5/14100.0*Average seed
Willem II 1 Ajax 3 -0.3
ADO 4 Excelsior 1 -0.2
PSV 4 Zwolle 1 +0.1
Vitesse 3 Roda 0 +0.1
Points
Chance Will Win Championship