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*Chance wins title100.0*Average seed
Marítimo 1 Porto 1 -10.6
-0.1
Rio Ave 0 Benfica 1 -10.4
-0.1
Week of 5/14100.0*Chance wins title100.0*Average seed
Benfica 5 Vitória Guimarães 0 No
-0.0
Porto 4 Paços de Ferreira 1 +1.9
Week of 5/21None
Points
Chance Will Win Championship