1 Novak Djokovic en route) and was a member of the Spanish team that won the 2019 Davis Cup.Carreño Busta reached as high as No.

[19] After a strong start to the opening three months of 2013, winning 42 out of 43 matches on the ITF Circuit, Carreño Busta entered the qualification stage of the 2013 Grand Prix Hassan II in April, held in Casablanca, Morocco.

[5] He won his three qualifying matches, and then beat first seed and two-time Grand Prix Hassan II champion, Pablo Andújar, 6–4, 2–6, 6–3.

[21] Later on that month, Carreño Busta reached the semi-final stage of the 2013 Portugal Open, again progressing through the qualification rounds, before losing to Stan Wawrinka in three sets.

In August, he won his first ever ATP singles title at the 2016 Winston-Salem Open, defeating compatriot Roberto Bautista Agut in the final.

After a quarterfinal appearance in Sydney, Carreño Busta reached the third round of the Australian Open losing to Denis Istomin.

[26] The following week, Carreño Busta reached his first ATP 500 final at the Rio Open, saving a match point against rising teen Casper Ruud en route[27] before losing to Dominic Thiem.

[28] In São Paulo, he fell to Cuevas, his doubles partner, the two-time defending and eventual champion in the semifinals.

[29] At the Indian Wells Open in March, Carreño Busta avenged his defeat to Cuevas, saving two match points in the process to advance to his first ATP Masters 1000 semifinal[30] where he lost to world No.

[35] In his quarterfinal against compatriot Rafael Nadal, Carreño Busta was forced to retire at a set and 0–2 down due to injury.

[36] At the US Open he made his first Grand Slam semifinal without dropping a set, beating Diego Schwartzman at the quarterfinal stage.

He defeated Benoît Paire, Adrian Mannarino, and upset second seed Grigor Dimitrov before losing to unseeded Stefanos Tsitsipas in the semifinals.

He defeated Luca Vanni, Ilya Ivashka, and 12th seed Fabio Fognini to reach the fourth round, where he faced Kei Nishikori.

After the match, Carreño Busta refused to shake the umpire's hand, and threw his bag onto the court before leaving the stadium amidst a booing crowd.

After missing much of the rest of the season due to injury, Carreño Busta won his fourth ATP title at the Chengdu Open beating Denis Shapovalov in the semifinal and Alexander Bublik in the final.

Carreño Busta's first major of the year was the Australian Open, where he lost his third round match to top-seeded Rafael Nadal.

This defaulted Djokovic from the tournament, advancing Carreño Busta to the quarterfinals, where he defeated 12th seed Denis Shapovalov in five sets.

Carreño Busta won the first edition of the Andalucía Open in Marbella, Spain as the top seed by defeating Jaume Munar 6–1, 2–6, 6–4 in an all Spanish final.

[39] At the Olympics, Carreño Busta beat Tennys Sandgren, Marin Čilić, Dominik Koepfer and world No.

He went undefeated in singles in the group stage, recording victories over Alejandro Tabilo of Chile, Viktor Durasovic of Norway, and Filip Krajinović of Serbia, as Spain advanced to the semifinals.

[42] At the Barcelona Open, he defeated second seed Casper Ruud in the quarterfinals after saving three match points, following another three setter win in the round of 16 against Lorenzo Sonego in the same day.

At the Swedish Open in Båstad, he reached the semifinals defeating Diego Schwartzman in straight sets conceding only one game in the entire match.

[52] At the US Open, Carreño Busta reached the fourth round after defeating Dominic Thiem, Alexander Bublik, and Alex de Minaur.

796, he entered the 2024 National Bank Open, playing in his first Masters event since 2022, he recorded his first ATP win since January 2023, over Fábián Marozsán.

513, at the 2024 Cincinnati Open, with first back-to-back wins in two years, over 16th seed Sebastian Korda and Max Purcell, he reached the third round and returned to the top 300 in the rankings, climbing more than 200 positions.

In 2015, Carreño Busta joined the Ferrero Tennis Academy in Alicante to train with coach Samuel López.

For the 2025 season, he will train at the TEC Carles Ferrer Salat in Barcelona and be coached by Víctor López Morón.