Sebastian Korda (/ˈkɔːrdə/ KORD-ə; born July 5, 2000) is an American professional tennis player.

[1] At age 11, he won a golf tournament in Prague, in which his sister Nelly also competed.

[2] Korda made his ATP main draw debut at the New York Open.

Korda made his Grand Slam debut as a wildcard at the US Open where he was defeated by Denis Shapovalov.

[5] Korda reached his first ATP final at the Delray Beach Open defeating Cameron Norrie.

He also became the first American male tennis player to win on European clay since Sam Querrey in 2010.

In June at the Halle Open, his first ever ATP event on grass, Korda picked up his second top 10 win against 6th seed Roberto Bautista Agut|[9][10] along with beating Kei Nishikori en route to the quarterfinals,[11] where he lost to eventual champion Ugo Humbert.

[12] A week later, in his debut at Wimbledon, Korda reached the fourth round for the first time in his career after defeating in-form player and 15th seed Alex de Minaur, qualifier Antoine Hoang,[13] and 22nd seed Dan Evans.

At the Paris Masters, Korda defeated 13th seed Aslan Karatsev and former world No.

The win over Karatsev ended the Russian's push to qualify for the season-ending ATP Finals.

[21] Representing the USA during the Davis Cup tie against Colombia, he beat Nicolás Mejía in his debut.

[22] In the end, the USA won the tie over Colombia 4–0 to advance to the Davis Cup Finals.

[30][31] At the 2022 US Open, he reached the second round for the first time at this Major after defeating Facundo Bagnis before losing in a five sets, all-American clash with Tommy Paul.

[32][33] At the 2022 Gijón Open he reached the third final of his career defeating en route third seed Roberto Bautista Agut, Andy Murray in the quarterfinals and Arthur Rinderknech in the semifinals.

[34] He followed it by a fourth final at the 2022 European Open in Antwerp defeating Dominic Thiem before losing to second seed Félix Auger-Aliassime.

[51] Following this good run, he lost in the first round at the 2023 Wimbledon Championships to Jiří Veselý who was using protected ranking.

Starting the Asian swing at the 2023 Zhuhai Championships he defeated Alexandre Müller and fifth seed Tomás Martín Etcheverry to reach another semifinal.

At the 2024 Mutua Madrid Open, Korda won the men's doubles title with Australian Jordan Thompson.

[60][61] At the beginning of the grass court season at the 2024 Libéma Open in 's-Hertogenbosch he reached his seventh final, becoming the first American in the championship match since 1996.

[63][64] At the 2024 Queen's Club Championships he defeated Karen Khachanov, and third seed Grigor Dimitrov in three sets, to reach back-to-back grass court quarterfinals.

[68][69][70] Korda reached the final at the Adelaide International, losing to Félix Auger-Aliassime in three sets.

Korda has a 8–18 record against players who were, at the time the match was played, ranked in the top 10.