Promotion and relegation (pre-season) A total of twenty teams contested the league, including seventeen sides from the
2019–20 season and three promoted from the
2019–20 Segunda División. This included the two top teams from the Segunda División, and the winners of the
promotion play-offs. ;Teams relegated to Segunda División The first team to be relegated from
La Liga were
Espanyol, after a 0–1 loss to
city rivals Barcelona on 8 July 2020, ending their 26-year stay in the top tier. The second team to be relegated were
Mallorca, following a 1–2 home defeat against
Granada on 16 July 2020, suffering an immediate return to the second division. The third and final team to be relegated were
Leganés, after drawing 2–2 against
Real Madrid on 19 July 2020 in their final game of the season. This ended
Lega's four-year stint in the first tier. ;Teams promoted from Segunda División On 12 July 2020,
Cádiz became the first side to mathematically be promoted, assured of a return to the top flight after a fourteen-year absence following
Oviedo's 4–2 win against
Zaragoza. The second team to earn promotion were
Huesca, following their 3–0 win against
Numancia on 17 July 2020. This marked an immediate return to the first division after a season away. The final team to achieve promotion were
Elche on 23 August 2020, following a 1–0 aggregate victory over
Girona in the final of the promotion play-offs, sealing a return to La Liga after a five-year absence.
Stadiums and locations Personnel and sponsorship :1. On the back of shirt. :2. On the sleeves. :3. On the shorts.
Managerial changes == League table ==