2020: ATP Tour debut and first win Bergs made his ATP main draw debut as a wildcard at the
2020 European Open. In the first round, he recorded his first ATP victory by defeating
Albert Ramos Viñolas in straight sets, before pushing world No. 17
Karen Khachanov to three sets in the second round.
2021: Three ATP Challenger titles, top 200 debut In March 2021, Bergs won his first Challenger title at
Saint Petersburg. Later that month, he won his second Challenger title at
Lille. In June, he won his third Challenger title at
Almaty. After defeating fellow qualifier
Oscar Otte in the first round of the
Swiss Open Gstaad, he reached the top 200 at World No. 196 on 26 July 2021. In October, he again received a wildcard into the
European Open, but lost in the first round to
Lloyd Harris.
2022: Fourth Challenger title, major & top 150 debuts Bergs reached his first final of the season at the
Saint-Brieuc Challenger, losing to
Jack Draper. In May, he reached his second Challenger final of the season at the
Saturn Oil Open in
Troisdorf, Germany, where he lost to
Lukáš Klein. Ranked No. 207, he won the
Ilkley Trophy as a qualifier, defeating lucky loser
Alexei Popyrin in the semifinals and
Jack Sock in the final. As a result, he received a wildcard into
Wimbledon, where he made his Grand Slam debut. He also climbed more than 60 positions up the rankings to a new career-high of world No. 146 on 20 June 2022. He then
qualified for the main draw at the
Australian Open, defeating another Bulgarian,
Adrian Andreev, but lost in the first round to
Laslo Djere. Bergs received a wildcard for the
Miami Open, but lost in the first round to lucky loser
Thanasi Kokkinakis. He entered the
U.S. Men's Clay Court Championships as a lucky loser directly into the second round, but lost to
Cristian Garín. As the defending champion, he entered the
Ilkley Trophy Challenger, but lost to
Denis Kudla in the second round. Bergs missed several months playing on the ATP Tour, due to a torn ligament in his left wrist, but returned in September at the
Chengdu Open as a wildcard. In October, he received a wildcard in doubles for the
European Open in
Antwerp, alongside compatriot
Tibo Colson. In November, at the
Calgary Challenger, he reached the quarterfinals and won his sixth Challenger title in
Drummondville, and in December, his seventh in
Yokkaichi.
2024: French Open debut, top 65 In April, Bergs won his first match of the season on the
ATP Tour in
Houston, defeating qualifier
Patrick Kypson in the first round, before losing to top seed and eventual champion
Ben Shelton in the second round. Bergs then reached back-to-back finals on the
ATP Challenger Tour, in
Sarasota where he lost to
Thanasi Kokkinakis and in
Tallahassee where he defended his title and defeated
Mitchell Krueger to win his eighth Challenger title. Bergs received a wildcard for the main draw at the
Madrid Open, where he made his debut but lost in the first round to
Luca Van Assche. In May, Bergs qualified for the main draw of the
Italian Open, where he lost to
Rafael Nadal in the first round. Ranked No. 102, Bergs made his
French Open debut after qualifying for the main draw. He upset 24th seed
Alejandro Tabilo for his first win at a Major and defeated
Maximilian Marterer to reach the third round of a Major for the first time where he lost to 10th seed
Grigor Dimitrov. As a result, he reached the top 85 in the rankings on 10 June 2024. In the beginning of the grass court season he entered the main draw of the
Rosmalen Open as a lucky loser and defeated local wildcard
Tim van Rijthoven, before losing to top seed Alex de Minaur in the second round. He also entered the main draw at the
Wimbledon after qualifying but lost to
Arthur Cazaux in five sets with a super tiebreaker in the fifth. As a result, he reached the top 75 in the singles rankings on 15 July 2024. He lost his next match against 31st seed
Flavio Cobolli. In October, Bergs reached the quarterfinals at the
European Open in
Antwerp with wins over
Facundo Díaz Acosta and fourth seed
Sebastián Báez, before his run was ended by eighth seed
Marcos Giron. The following month, ranked No. 61, Bergs also made it through to the quarterfinals at the
Moselle Open, defeating lucky loser
Manuel Guinard and
Hugo Gaston. Bergs lost in the last eight to
Cameron Norrie.
2025: ATP Tour finals, top 10 win, Masters quarterfinal, top 40 In January, Bergs reached his maiden ATP Tour final as a qualifier at the
2025 ASB Classic with wins over
Pablo Carreño Busta,
Francisco Comesaña,
Isaac Becroft,
Luca Nardi,
Roberto Carballés Baena, and seventh seed
Nuno Borges. As a result, Bergs reached the top 60 in the rankings on 13 January 2025. He lost to
Gaël Monfils in straight sets in the championship match. In February, Bergs reached his second career semifinal at the
Open 13 in Marseille, with wins over eight seed Nuno Borges and
Zhizhen Zhang by retirement. In March, at the
2025 Miami Open, Bergs reached the third round recording his first top 10 win over eight seed
Andrey Rublev. As a result, he reached the top 50 on 31 March 2025. In June, Bergs reached his second career ATP final at the
2025 Libéma Open in 's-Hertogenbosch with a win over
Mark Lajal in the quarterfinal, and
Reilly Opelka in the semifinal. He lost to
Gabriel Diallo in the final. In September, Bergs reached the third round of the
US Open after the withdrawal of
Jack Draper, where he lost to
Jaume Munar in straight sets. At the
2025 Rolex Shanghai Masters he reached his first Masters-level quarterfinal defeating
Gabriel Diallo and reached the top 40 on 13 October 2025. ==National Representation==