2020: ATP debut and first win

Bergs made his ATP main draw debut at the 2020 European Open after receiving a wildcard for the singles main draw. In the first round, he recorded his first ATP victory by defeating Albert Ramos Viñolas in straight sets,^[2][3] before pushing world No. 17 Karen Khachanov to three sets.^[4]

2021: Three ATP Challenger titles, top 200 debut

Bergs won his first Challenger title at the 2021 Saint Petersburg Challenger in March and later on in the month, would win his second Challenger title at the 2021 Lille Challenger. In June, he won his third Challenger title at the 2021 Almaty Challenger.^[5]

After a second round showing at the 2021 Swiss Open Gstaad where he defeated fellow qualifier Oscar Otte in the first round, he reached the top 200 at World No. 196 on 26 July 2021.

2022: Fourth Challenger title, Grand Slam & top 150 debut

He reached his first final of the season at the Saint-Brieuc Challenger losing to Jack Draper.^[6]

In May, he reached his second Challenger final of the season at the 2022 Saturn Oil Open in Troisdorf, Germany, where he lost to Lukáš Klein.^[7]

Ranked No. 207, he won the 2022 Ilkley Trophy as a qualifier defeating lucky loser Alexei Popyrin in the semifinals^[8][9][10] and Jack Sock in the final. As a result he won the last 2022 Wimbledon wildcard where he made his Grand Slam debut.^[11] He also climbed more than 60 positions up the rankings to a new career-high of World No. 146 on 20 June 2022.

2023: United Cup, Australian Open and Masters debuts, top 125

On his debut as the No. 2 player from Belgium, he lost his two singles matches at the inaugural 2023 United Cup against world No. 196 Bulgarian Dimitar Kuzmanov and world No. 803 Greek Stefanos Sakellaridis.^[12] He made his debut by qualifying for the main draw at the 2023 Australian Open defeating another Bulgarian Adrian Andreev.^[13] In the first round, he lost to Serbian Laslo Djere.

He received a wildcard for the 2023 Miami Open main draw but lost to lucky loser Thanasi Kokkinakis.^[14] He entered the 2023 U.S. Men's Clay Court Championships also as a lucky loser into the second round after the late withdrawal of third seed Brandon Nakashima but lost to Cristian Garin. He entered the 2023 Ilkley Trophy Challenger as the defending champion^[15] but lost to Denis Kudla in the second round.

After a couple of months away from the Tour due to a torn ligament in his left wrist, he returned at the 2023 Chengdu Open after he received a wildcard, but lost to Dušan Lajović. He also played at his home tournament, the 2023 European Open in singles qualifying and in doubles with Tibo Colson, and at the Calgary Challenger, Canada where he reached the quarterfinals.^[16] He won his sixth Challenger in Drummondville, Canada.

Singles: 17 (10–7)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	Jan 2018	Turkey F2, Antalya	Futures	Hard	Dimitar Kuzmanov	6–3, 6–4
Win	2–0	May 2018	Poland F1, Wisła	Futures	Clay	Michael Vrbenský	3–6, 6–1, 6–2
Loss	2–1	Jul 2018	Belgium F2, Arlon	Futures	Clay	Juan Pablo Varillas	6–7(6–8), 6–4, 1–6
Loss	2–2	Jul 2018	Belgium F5, Duinbergen	Futures	Clay	Jeroen Vanneste	6–7(2–7), 3–6
Win	3–2	Mar 2019	M15 Doha, Qatar	World Tennis Tour	Hard	Adrian Obert	6–4, 6–1
Loss	3–3	Jan 2020	M15 Monastir, Tunisia	World Tennis Tour	Hard	Nuno Borges	4–6, 6–7(6–8)
Loss	3–4	Feb 2020	M15 Heraklion, Greece	World Tennis Tour	Hard	Clement Geens	6–3, 4–6, 1–6
Win	4–4	Nov 2020	M15 Bratislava, Slovakia	World Tennis Tour	Hard (i)	Bogdan Bobrov	6–4, 6–2
Win	5–4	Mar 2021	St. Petersburg, Russia	Challenger	Hard (i)	Altuğ Çelikbilek	6–4, 3–6, 6–4
Win	6–4	Mar 2021	Lille, France	Challenger	Hard (i)	Grégoire Barrère	4–6, 6–1, 7–6(7–5)
Win	7–4	Jun 2021	Almaty, Kazakhstan	Challenger	Clay	Timofey Skatov	4–6, 6–3, 6–2
Loss	7–5	Mar 2022	Saint-Brieuc, France	Challenger	Hard (i)	Jack Draper	2–6, 7–5, 4–6
Loss	7–6	May 2022	Troisdorf, Germany	Challenger	Clay	Lukáš Klein	2–6, 4–6
Win	8–6	Jun 2022	Ilkley, United Kingdom	Challenger	Grass	Jack Sock	7–6(9–7), 2–6, 7–6(8–6)
Loss	8–7	Aug 2022	Mallorca, Spain	Challenger	Hard	Luca Nardi	6–7(2–7), 6–3, 5–7
Win	9–7	Apr 2023	Tallahassee, United States	Challenger	Clay	Wu Tung-lin	7–5, 6–2
Win	10–7	Nov 2023	Drummondville, Canada	Challenger	Hard (i)	James Duckworth	6–4, 7–5

Doubles 8 (4–4)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Mar 2018	Qatar F1, Doha	Futures	Hard	Scott Griekspoor	Jonas Merckx Fred Simonsson	7–6(7–3), 3–6, [4–10]
Win	1–1	Mar 2018	Qatar F2, Doha	Futures	Hard	Fred Simonsson	Marek Gengel Matěj Vocel	6–4, 3–6, [10–6]
Loss	1–2	Jul 2018	Italy F12, Reggio Emilia	Futures	Clay	Maxime Tabatruong	Tuna Altuna Alexandar Lazov	4–6, 2–6
Win	2–2	Mar 2019	M15 Doha, Qatar	World Tennis Tour	Hard	Geoffrey Blancaneaux	Arnaud Bovy Jesper de Jong	6–2, 6–4
Win	3–2	Aug 2019	M15 Koksijde, Belgium	World Tennis Tour	Clay	Dan Added	Romain Barbosa Arnaud Bovy	6–4, 3–6, [10–3]
Loss	3–3	Oct 2019	M15 Benicarló, Spain	World Tennis Tour	Clay	Tiago Cação	Pablo Llamas Ruiz Benjamín Winter López	3–6, 4–6
Win	4–3	Nov 2019	M15 Monastir, Tunisia	World Tennis Tour	Clay	Francesco Vilardo	Aziz Dougaz Benjamin Lock	6–3, 6–4
Loss	4–4	Dec 2019	M15 Doha, Qatar	World Tennis Tour	Hard	Zura Tkemaladze	Simon Freund Jonathan Mridha	1–6, 0–6

Singles