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.

Atalanta led Serie A after matchday 15 of 2024-25.

They were level on 34 points with Fiorentina. Nothing was decided mathematically on this matchday.

Results

Date	Home	Score	Away
6 Dec	Inter	3–1	Parma
6 Dec	Atalanta	2–1	AC Milan
7 Dec	Genoa	0–0	Torino
7 Dec	Juventus	2–2	Bologna
7 Dec	Roma	4–1	Lecce
8 Dec	Fiorentina	1–0	Cagliari
8 Dec	Verona	1–4	Empoli
8 Dec	Venezia	2–2	Como
8 Dec	Napoli	0–1	Lazio
9 Dec	Monza	1–2	Udinese

Table after matchday 15

Pos.	Team	Played	Goal diff.	Points	Max.	Title
1	Atalanta	15	+21	34	103	In it
2	Fiorentina	15	+21	34	103	In it
3	Napoli	15	+11	32	101	In it
4	Inter	15	+16	31	100	In it
5	Lazio	15	+13	31	100	In it
6	Juventus	15	+14	27	96	In it
7	Bologna	15	+3	25	94	In it
8	AC Milan	15	+7	22	91	In it
9	Udinese	15	-4	20	89	In it
10	Empoli	15	-1	19	88	In it
11	Roma	15	-3	16	85	In it
12	Torino	15	-4	16	85	In it
13	Parma	15	-4	15	84	In it
14	Genoa	15	-11	15	84	In it
15	Cagliari	15	-10	14	83	In it
16	Lecce	15	-18	13	82	In it
17	Como	15	-12	12	81	In it
18	Verona	15	-19	12	81	In it
19	Monza	15	-6	10	79	In it
20	Venezia	15	-14	9	78	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 15 of 2024-25?: Atalanta led Serie A after matchday 15 of 2024-25. They were level on 34 points with Fiorentina.
What was decided on matchday 15 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.