How is this calculated?

A team is counted as still in it when at least one set of results for the matches left would put it there, taking into account that its rivals also play each other. It is counted as sure only when no set of results can take it away. Teams level on points are treated cautiously while matches remain: level is enough to stay in, never enough to be sure, because goal difference and the other tie-breaks are only applied once the season is over. Points deductions are included as published in the league table.

Napoli led Serie A after matchday 20 of 2024-25.

With 47 points, they were 3 ahead of Inter. Nothing was decided mathematically on this matchday.

Results

Date	Home	Score	Away
10 Jan	Lazio	1–1	Como
11 Jan	Empoli	1–3	Lecce
11 Jan	Udinese	0–0	Atalanta
11 Jan	Torino	1–1	Juventus
11 Jan	AC Milan	1–1	Cagliari
12 Jan	Genoa	1–0	Parma
12 Jan	Venezia	0–1	Inter
12 Jan	Bologna	2–2	Roma
12 Jan	Napoli	2–0	Verona
13 Jan	Monza	2–1	Fiorentina

Table after matchday 20

Pos.	Team	Played	Goal diff.	Points	Max.	Title
1	Napoli	20	+20	47	101	In it
2	Inter	20	+28	44	98	In it
3	Atalanta	20	+23	43	97	In it
4	Lazio	20	+6	36	90	In it
5	Fiorentina	20	+15	35	89	In it
6	Juventus	20	+15	34	88	In it
7	Bologna	20	+5	33	87	In it
8	AC Milan	20	+9	31	85	In it
9	Udinese	20	-5	26	80	In it
10	Roma	20	+2	24	78	In it
11	Genoa	20	-10	23	77	In it
12	Torino	20	-5	22	76	In it
13	Empoli	20	-6	20	74	In it
14	Lecce	20	-18	20	74	In it
15	Parma	20	-10	19	73	In it
16	Como	20	-11	19	73	In it
17	Verona	20	-20	19	73	In it
18	Cagliari	20	-14	18	72	In it
19	Venezia	20	-15	14	68	In it
20	Monza	20	-9	13	67	In it

Max.: the most points the team can still finish on.

Matchdays

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Quick answers

Who was top of Serie A after matchday 20 of 2024-25?: Napoli led Serie A after matchday 20 of 2024-25. With 47 points, they were 3 ahead of Inter.
What was decided on matchday 20 of the 2024-25 Serie A?: Nothing was decided mathematically on this matchday.
How is this calculated?: A team is counted as still in it when at least one set of results for the matches left would put it there, taking into account that its rivals also play each other. It is counted as sure only when no set of results can take it away. Teams level on points are treated cautiously while matches remain: level is enough to stay in, never enough to be sure, because goal difference and the other tie-breaks are only applied once the season is over. Points deductions are included as published in the league table.