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.

Paris Saint-Germain led Ligue 1 after matchday 17 of 2023-24.

With 40 points, they were 5 ahead of Nice. Nothing was decided mathematically on this matchday.

Results

Date	Home	Score	Away
20 Dec	Clermont Foot	1–3	Rennes
20 Dec	Toulouse	1–2	Monaco
20 Dec	Montpellier	1–1	Marseille
20 Dec	Nice	2–0	Lens
20 Dec	Lyon	1–0	Nantes
20 Dec	Paris Saint-Germain	3–1	FC Metz
20 Dec	Strasbourg	2–1	Lille
20 Dec	Brest	4–0	Lorient
20 Dec	Stade de Reims	1–0	Le Havre

Table after matchday 17

Pos.	Team	Played	Goal diff.	Points	Max.	Title
1	Paris Saint-Germain	17	+28	40	91	In it
2	Nice	17	+10	35	86	In it
3	Monaco	17	+11	33	84	In it
4	Brest	17	+10	31	82	In it
5	Lille	17	+7	28	79	In it
6	Marseille	17	+7	27	78	In it
7	Lens	17	+4	26	77	In it
8	Stade de Reims	17	-1	26	77	In it
9	Strasbourg	17	-4	23	74	In it
10	Rennes	17	+1	19	70	In it
11	Montpellier	17	-2	19	70	In it
12	Le Havre	17	-3	19	70	In it
13	Nantes	17	-9	18	69	In it
14	FC Metz	17	-11	16	67	In it
15	Lyon	17	-11	16	67	In it
16	Toulouse	17	-8	14	65	In it
17	Lorient	17	-14	12	63	In it
18	Clermont Foot	17	-15	11	62	In it

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

Matchdays

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Quick answers

Who was top of Ligue 1 after matchday 17 of 2023-24?: Paris Saint-Germain led Ligue 1 after matchday 17 of 2023-24. With 40 points, they were 5 ahead of Nice.
What was decided on matchday 17 of the 2023-24 Ligue 1?: 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.