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.

Inter led Serie A after matchday 18 of 2025-26.

With 42 points, they were 1 ahead of AC Milan. Nothing was decided mathematically on this matchday.

Results

Date	Home	Score	Away
2 Jan	Cagliari	0–1	AC Milan
3 Jan	Como	1–0	Udinese
3 Jan	Genoa	1–1	AC Pisa
3 Jan	Sassuolo	1–1	Parma
3 Jan	Juventus	1–1	Lecce
3 Jan	Atalanta	1–0	Roma
4 Jan	Lazio	0–2	Napoli
4 Jan	Fiorentina	1–0	Cremonese
4 Jan	Verona	0–3	Torino
4 Jan	Inter	3–1	Bologna

Table after matchday 18

Pos.	Team	Played	Goal diff.	Points	Max.	Title
1	Inter	18	+24	42	102	In it
2	AC Milan	18	+17	41	101	In it
3	Napoli	18	+13	38	98	In it
4	Juventus	18	+8	33	93	In it
5	Roma	18	+8	33	93	In it
6	Como	18	+9	30	90	In it
7	Bologna	18	+9	29	89	In it
8	Atalanta	18	+2	25	85	In it
9	Lazio	18	+4	24	84	In it
10	Sassuolo	18	+1	23	83	In it
11	Torino	18	-8	23	83	In it
12	Udinese	18	-11	22	82	In it
13	Cremonese	18	-3	21	81	In it
14	Parma	18	-7	19	79	In it
15	Cagliari	18	-6	18	78	In it
16	Lecce	18	-12	17	77	In it
17	Genoa	18	-10	15	75	In it
18	Fiorentina	18	-10	12	72	In it
19	AC Pisa	18	-12	12	72	In it
20	Verona	18	-16	12	72	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 18 of 2025-26?: Inter led Serie A after matchday 18 of 2025-26. With 42 points, they were 1 ahead of AC Milan.
What was decided on matchday 18 of the 2025-26 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.