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*Campeonato Nacional100.0*Average seed
União Militar 20 Liga Operária 18 +15.1
-0.7
Paternos 25 Poti 15 -3.4
+0.2
Abedi Pelé 18 AE Popular 13 -3.3
+0.1
Jiquiá FAC 39 Serafiano 10 -2.5
+0.1
Week of 5/17100.0*Campeonato Nacional100.0*Average seed
Liga Operária 43 Siliar 37 -6.6
+0.5
Serafiano 30 FAC Metropolitano 27 (ot)+2.9
-0.1
União Militar 28 Jiquiá FAC 39 -2.9
+0.1
AE Popular 10 Paternos 22 -2.1
+0.2
Poti 30 Olímpia 28 +1.7
-0.2
Week of 5/24100.0*Campeonato Nacional100.0*Average seed
Liga Operária 23 Abedi Pelé 18 -13.1
+0.8
Poti 42 Dima Cardinals 42 (ot)Yes
-0.2
FAC Metropolitano 27 União Militar 13 -11.5
+0.3
AE Popular 40 Olímpia 37 +0.4
-0.3
Points
Chance Will Win Championship