How are these numbers calculated?

Big Games

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

Week of 5/10100.0*Chance wins title100.0*Average seed
Zopene 20 Doza 27 (ot)+12.0
+0.2
Bolanha 24 Olimorque 17 -11.0
-0.1
Olímpia 40 Duas 37 +2.5
+0.1
Week of 5/17100.0*Chance wins title100.0*Average seed
Pocino 36 Bolanha 33 +12.8
+0.1
Doza 40 Olimorque 21 +12.7
+0.1
Week of 5/24None
Points
Chance Will Win Championship