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
Moreirense 2 Sporting Braga 1 -0.1
Week of 5/14100.0*Average seed
Sporting Braga 4 Nacional 0 +0.1
Marítimo 1 Estoril 1 +0.0
Week of 5/21None
Chance Will Win Championship