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.

Real Madrid led La Liga after matchday 20 of 2023-24.

With 51 points, they were 2 ahead of Girona. Nothing was decided mathematically on this matchday.

Results

Date	Home	Score	Away
12 Jan	Sevilla	2–3	Alavés
13 Jan	Las Palmas	3–0	Villarreal
13 Jan	Mallorca	1–1	Celta Vigo
13 Jan	Athletic Club	2–1	Real Sociedad
13 Jan	Real Betis	1–0	Granada
14 Jan	Almería	0–0	Girona
14 Jan	Cádiz CF	1–4	Valencia
31 Jan	Barcelona	1–0	Osasuna
31 Jan	Atlético Madrid	2–1	Rayo Vallecano
1 Feb	Getafe	0–2	Real Madrid

Table after matchday 20

Pos.	Team	Played	Goal diff.	Points	Max.	Title
1	Real Madrid	20	+31	51	105	In it
2	Girona	20	+22	49	103	In it
3	Barcelona	20	+15	44	98	In it
4	Athletic Club	20	+18	41	95	In it
5	Atlético Madrid	20	+17	41	95	In it
6	Real Sociedad	20	+10	32	86	In it
7	Real Betis	20	+2	31	85	In it
8	Valencia	20	+2	29	83	In it
9	Las Palmas	20	+2	28	82	In it
10	Getafe	20	-3	26	80	In it
11	Rayo Vallecano	20	-7	23	77	In it
12	Osasuna	20	-8	22	76	In it
13	Alavés	20	-9	20	74	In it
14	Mallorca	20	-6	19	73	In it
15	Villarreal	20	-14	19	73	In it
16	Celta Vigo	20	-9	17	71	In it
17	Sevilla	20	-5	16	70	In it
18	Cádiz CF	20	-15	15	69	In it
19	Granada	20	-19	11	65	In it
20	Almería	20	-24	6	60	In it

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

Matchdays

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Quick answers

Who was top of La Liga after matchday 20 of 2023-24?: Real Madrid led La Liga after matchday 20 of 2023-24. With 51 points, they were 2 ahead of Girona.
What was decided on matchday 20 of the 2023-24 La Liga?: 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.