Dominik Koepfer

Dominik Koepfer (born 29 April 1994), also spelled Köpfer, is a German professional tennis player. He achieved a career-high ATP singles ranking of world No. 49 on 4 March 2024, and a doubles ranking of No. 89 on 4 April 2024.

He played college tennis at Tulane University.

2017: ATP debut
Koepfer made his ATP main draw debut at the Winston-Salem Open as a lucky loser. He won his first ATP Challenger Tour title in doubles at the Columbus Challenger, partnering Denis Kudla.

2018: First ATP win
Koepfer won his first match on the ATP Tour, again as a lucky loser at the Winston-Salem Open, defeating Tennys Sandgren.

2019: First Challenger title, Grand Slam debut, US Open fourth round
After winning his maiden Challenger title in singles at the Ilkley Trophy, Koepfer earned a wild card into the Wimbledon Championships. There, he won his first Grand Slam main draw match by defeating Filip Krajinović in the first round before losing to Diego Schwartzman in straight sets.

As a qualifier at the US Open, Koepfer defeated 17th seed Nikoloz Basilashvili in the third round, before losing to eventual finalist Daniil Medvedev in four sets in the fourth round.

2020: First Top-10 win and Masters 1000 quarterfinal
Koepfer reached his first ATP Tour Masters 1000 quarterfinal at the Italian Open, defeating Gael Monfils en route for his first top-10 win before losing to eventual champion Novak Djokovic in three sets.

He reached the second round of the French Open for the first time, losing to Stan Wawrinka in four sets.

2021: Top 50 debut, two Grand Slams third rounds
Koepfer started his season at the first edition of the Great Ocean Road Open. He lost in the first round to Australian Christopher O'Connell. At the Australian Open, he was defeated in the second round by third seed and last year finalist, Dominic Thiem.

Seeded sixth at the Córdoba Open, Koepfer was eliminated in the first round by Federico Coria. In Buenos Aires, he fell in the second round to fifth seed Albert Ramos Viñolas. At the Mexican Open, he reached his first ATP tour semifinal beating Mexican wildcard Gerardo López Villaseñor, fourth seed Milos Raonic, and Cameron Norrie. He ended up losing to second seed, compatriot, and eventual champion, Alexander Zverev. With this result, Koepfer climbed into the top 60 in the rankings to a career-high of No. 54 in singles. At the Miami Open, he was beaten in the first round by Hugo Gaston.

Koepfer began the clay-court season at the Monte-Carlo Masters. Getting past qualifying, he lost in the first round to fellow qualifier Marco Cecchinato. Next, he competed at the Barcelona Open. He was defeated in the first round by fellow leftie Corentin Moutet. Playing in Munich, he was eliminated in the second round by seventh seed, compatriot, and eventual finalist Jan-Lennard Struff. At the Madrid Open, he was beaten in his second-round match by 16th seed Cristian Garín. His final tournament before the second Grand slam of the year was the Geneva Open. He upset seventh seed Benoît Paire in a three-set first round victory. He ended up losing in the quarterfinals to third seed and eventual champion, Casper Ruud. At the French Open, he reached the third round for the first time and was defeated by eighth seed, former world number one, and 2009 champion Roger Federer.

Koepfer opened his grass-court season at the Stuttgart Open. He lost in the first round to Jurij Rodionov. In Halle, he faced third seed Alexander Zverev in the first round. He pushed Zverev to three sets but ended up losing the match. At Wimbledon, he made it to the third round for the first time where he fell to eighth seed Roberto Bautista Agut.

After Wimbledon, Koepfer played at the Hamburg Open. He was eliminated in the second round by top seed Stefanos Tsitsipas. Representing Germany at the Summer Olympics, he reached the third round and lost to sixth seed and eventual bronze medalist, Pablo Carreño Busta.

Starting his US Open preparation at the Canadian Open, Koepfer was defeated in the first round of qualifying by Canadian wildcard Peter Polansky. In Cincinnati, he fell in the final round of qualifying to Marcos Giron before earning a spot in the main draw as a lucky lower. He was defeated in the second round by seventh seed Pablo Carreño Busta. Seeded 16th at the Winston-Salem Open, he reached the third round where he was beaten by top seed Carreño Busta. At the US Open, he lost in the second round to second seed and eventual champion, Daniil Medvedev.

Competing at the first edition of the San Diego Open, Koepfer was defeated in the first round by eventual finalist Cameron Norrie. At the Indian Wells Masters, he fell in the first round to Emil Ruusuvuori in three sets. In Vienna, he was eliminated in the final round of qualifying by Gianluca Mager. Entering the main draw as a lucky loser, he lost in the first round to Lorenzo Sonego. At the Paris Masters, he lost in the final round of qualifying to Miomir Kecmanović. Due to the withdrawal of Jenson Brooksby, he entered the tournament's main draw as a lucky loser. He defeated Andy Murray in the first round, saving seven match points; his victory was named one of the top-5 comebacks of the 2021 season. In the second round, he upset ninth seed Félix Auger-Aliassime. With this win, he ended the Canadian's hopes of qualifying for the ATP finals. In the third round, he lost to seventh seed Hubert Hurkacz in three sets.

2022: Loss of form, out of clay season & of top 200
At the Australian Open, Koepfer defeated Carlos Taberner before losing to 23rd seed Reilly Opelka in the second round. Due to an ongoing arm injury, he decided to skip the entire clay season. As a result, his ranking plummeted to No. 149 on 18 July 2022, out of the top 150 at No. 159 on 22 August 2022, and out of the top 250 at No. 259 on 7 November 2022.

Following his title at the Calgary National Bank Challenger, he returned to the top 200 at world No. 195 climbing 64 positions up in the rankings on 14 November 2022 only to drop again to No. 202 on 28 November 2022.

2023: Two Challenger titles, back to top 100, maiden ATP doubles final
Ranked No. 262, Koepfer won his third Challenger at the Mexico City Open and returned to the top 200 at world No. 179 up more than 80 positions in the rankings. The following week, he reached a second final at the San Luis Open Challenger. As a result, he moved another 25 positions into the top 155. He also reached the final at the Prague Open and reached the top 150 on 8 May 2023. Koepfer won his fourth Challenger title at the Challenger 175 at the Piemonte Open in Turin as an alternate and moved close to 50 positions up, a couple of positions shy of the top 100.

He reached the semifinals at the Los Cabos Open where he lost to fifth seed Alex de Minaur. At the same tournament, he also reached his maiden ATP final with Andrew Harris.

2024: Major doubles semifinals, second Masters fourth round
He won his fifth Challenger at the 2024 Canberra Tennis International.

He then competed in the 2024 Australian Open, beginning his campaign against fellow compatriot and sixth seed Alexander Zverev, falling in four tight sets. In doubles, alongside his compatriot Yannick Hanfmann he reached the semifinals as an unseeded pair, before losing to Italian duo Simone Bolelli and Andrea Vavassori.

At the 2024 Dallas Open he reached the quarterfinals defeating Aleksandar Kovacevic and Rinky Hijikata. He lost to eventual champion Tommy Paul. He reached a second quarterfinal for the season at the 2024 Abierto Mexicano Telcel in Acapulco, defeating qualifier Terence Atmane and eight seed Frances Tiafoe. He lost to second seed Holger Rune. He reached a new career-high ranking of No. 49 on 4 March 2024. At the 2024 Miami Open, he defeated Marcos Giron, 18th seed Sebastian Baez and 14th seed Ugo Humbert to reach the fourth round of a Masters for the second time, recording his first wins at this tournament.

Singles
Current through the 2024 Hamburg Open.

Wins over top 10 players

 * Koepfer has a record against players who were, at the time the match was played, ranked in the top 10.