Spain faces the tough challenge of defending its title in 2021. The first hurdle will be to make it through to the quarter-finals of the Davis Cup by Rakuten Madrid Finals in a Group A that will pit them against giants Russia and one of the debutant teams, Ecuador.
- Spain won its sixth Davis Cup title in 2019 after being one of the dominant teams of the last two decades. The team picked up its first Davis Cup trophy in 2000.
- Rafael Nadal is the undisputed leader of the team. In 2019 he once again demonstrated his commitment, playing in the Finals not only in his singles matches but also the decisive doubles matches of the knockout rounds.
- Roberto Bautista has established himself as the number two in a team that also boasts Pablo Carreño among the world top 25. The team can also count on the versatility of stalwart Feliciano Lopez. Promising new players, such as Alejandro Davidovich – 20 years old and already in the top 100 – are emerging on the horizon of the Spanish team.
- Sergi Bruguera, Roland-Garros champion in 1993 and 1994, is team captain.
- Spain, as defending champions, qualified directly for this year's Finals; a position also enjoyed by the other 2019 semi-finalists (Canada, Great Britain and Russia) and the two 2020 wild cards (France and Serbia).