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 21 of 2024-25.

With 50 points, they were 3 ahead of Inter. Nothing was decided mathematically on this matchday.

Results

Date	Home	Score	Away
17 Jan	Roma	3–1	Genoa
18 Jan	Bologna	3–1	Monza
18 Jan	Juventus	2–0	AC Milan
18 Jan	Atalanta	2–3	Napoli
19 Jan	Fiorentina	1–1	Torino
19 Jan	Cagliari	4–1	Lecce
19 Jan	Parma	1–1	Venezia
19 Jan	Verona	0–3	Lazio
19 Jan	Inter	3–1	Empoli
20 Jan	Como	4–1	Udinese

Table after matchday 21

Pos.	Team	Played	Goal diff.	Points	Max.	Title
1	Napoli	21	+21	50	101	In it
2	Inter	21	+30	47	98	In it
3	Atalanta	21	+22	43	94	In it
4	Lazio	21	+9	39	90	In it
5	Juventus	21	+17	37	88	In it
6	Fiorentina	21	+15	36	87	In it
7	Bologna	21	+7	36	87	In it
8	AC Milan	21	+7	31	82	In it
9	Roma	21	+4	27	78	In it
10	Udinese	21	-8	26	77	In it
11	Torino	21	-5	23	74	In it
12	Genoa	21	-12	23	74	In it
13	Como	21	-8	22	73	In it
14	Cagliari	21	-11	21	72	In it
15	Empoli	21	-8	20	71	In it
16	Parma	21	-10	20	71	In it
17	Lecce	21	-21	20	71	In it
18	Verona	21	-23	19	70	In it
19	Venezia	21	-15	15	66	In it
20	Monza	21	-11	13	64	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 21 of 2024-25?: Napoli led Serie A after matchday 21 of 2024-25. With 50 points, they were 3 ahead of Inter.
What was decided on matchday 21 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.