How are these numbers calculated? (show)

Big Games

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

Week of 5/1Impact
Atalanta BC1Bologna1(-0.14)
Lazio0Inter Milan2
Calcio Catania1Juventus1
0.00 (-0.10)
Week of 5/9
Napoli2Atalanta BC0(-0.03)
Bologna1Calcio Catania1
Livorno1Lazio2
0.00 (-0.03)
Week of 5/15
None
Points  (Full Screen)
Chance Will Win Championship  (Full Screen)