Gustavo Heide

2020: Juniors

Heide had good results on the ITF junior circuit, with a 79–26 singles win-loss record. He reached an ITF junior combined ranking of No. 16 on 24 February 2020.^[3]

2023: First Challenger singles final, Top 250

Heide made it into his first singles Challenger final at the 2023 Open Bogotá but withdrew before the match handing the title to Thiago Agustin Tirante.^[4] Despite this, he reached the top 250 climbing more than 50 positions up in the rankings on 2 October 2023.^[5]

At the 2023 Pan American Games, Heide almost won a medal in singles, despite being only No. 252 in the world. He reached the semifinals, where he faced the tournament's top seed Facundo Díaz Acosta, ranked No. 109 in the world, and had match-point to close the game, but ended up losing in the tiebreak of the last set. In the bronze medal match, against compatriot Thiago Monteiro, he also lost in the last set tiebreak.^[6][7] In doubles, Heide, playing with Marcelo Demoliner, overcame the pro-Chilean crowd and took gold.^[8]

At the Montevideo Challenger, Heide reached the semifinals, losing again to Acosta.^[9]

For winning the IV Maria Esther Bueno Cup at the end of 2023, Heide earned an invitation to compete in the ATP 500 in Rio de Janeiro, in February 2024.^[10]

2024: ATP, Major and top 150 debuts, Challenger singles title

Heide participated in the tie between Brazil and Sweden for the Davis Cup World Qualifier, in February 2024.^[11]

At the ATP 500 tournament in Rio de Janeiro, he made his ATP debut as a wildcard, where he faced Chilean Tomás Barrios Vera but lost in the first round.^[12]

In March, Heide reached the semifinals of the Challenger in Santiago^[13] and soon after, at the inaugural Challenger in Asunción, Paraguay, he reached the final, defeating world No. 95 and top seed Juan Pablo Varillas.^[14] He won the championship match, lifting his maiden title by defeating his compatriot João Fonseca and made his top 200 debut at world No. 159 on 10 June 2024, moving more than 50 positions up in the rankings.^[15][16]

Ranked No. 174 at the time, Heide qualified for his first Grand Slam at the 2024 French Open after defeating Lukáš Klein, Bu Yunchaokete, and Matteo Gigante in the qualifying competition.^[17]

Singles: 6 (4 titles, 2 runner-ups)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Sep 2023	Open de Bogotá, Colombia	Challenger	Clay	Thiago Agustín Tirante	walkover
Win	1–1	Mar 2024	Paraguay Open, Paraguay	Challenger	Clay	João Fonseca	7–5, 6–7(6–8), 6–1
Win	2–1	Nov 2025	Engie Open Florianópolis, Brazil	Challenger	Clay	Andrea Collarini	6–2, 6–3
Win	3–1	Apr 2026	Internacional de Campinas, Brazil	Challenger	Clay	Gonzalo Bueno	6–2, 7-5
Loss	3–2	May 2026	Abruzzo Open Francavilla al Mare, Italy	Challenger	Clay	Facundo Díaz Acosta	7–5 1–6 2–6
Win	4–2	Jun 2026	Poznań Open, Poland	Challenger	Clay	Facundo Díaz Acosta	6–2, 6–2

Doubles: 6 (5 titles, 1 runner-up)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Nov 2021	Aberto da República, Brazil	Challenger	Clay	Mateus Alves	Luciano Darderi Genaro Alberto Olivieri	6–3, 6–3
Win	2–0	Apr 2023	Florianópolis Challenger, Brazil	Challenger	Clay	Pedro Boscardin Dias	Christian Oliveira Pedro Sakamoto	6–2, 7–5
Win	3–0	Aug 2023	RD Open, Dominican Republic	Challenger	Clay	Pedro Boscardin Dias	Diego Hidalgo Cristian Rodríguez	6–4, 7–5
Loss	3–1	Nov 2024	Lima Challenger II, Peru	Challenger	Clay	Luís Britto	Karol Drzewiecki Piotr Matuszewski	5–7, 4–6
Win	4–1	Jan 2025	Punta Open, Uruguay	Challenger	Clay	João Lucas Reis da Silva	Facundo Mena Marco Trungelliti	6–2, 6–3
Win	5–1	Mar 2026	LA Open, Brazil	Challenger	Clay	Guto Miguel	Felipe Meligeni Alves João Lucas Reis da Silva	6–4, 6–2

Singles: 11 (7 titles, 4 runner-ups)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	Sep 2021	M15 Ibagué, Colombia	WTT	Clay	Alejandro Gómez	7–6(10–8), 7–5
Win	2–0	Sep 2021	M15 Recife, Brazil	WTT	Clay (i)	José Pereira	6–4, 6–2
Loss	2–1	Oct 2021	M25 Rio do Sul, Brazil	WTT	Clay	Pedro Boscardin Dias	6–7(4–7), 4–6
Win	3–1	Nov 2021	M15 Brasília, Brazil	WTT	Clay	Oscar José Gutierrez	2–6, 6–0, 6–4
Win	4–1	Oct 2022	M25 Ibagué, Colombia	WTT	Clay	Gonzalo Lama	6–3, 7–5
Loss	4–2	Oct 2022	M15 Manizales, Colombia	WTT	Clay	Jorge Panta	1–6, 6–3, 6–7(3–7)
Win	5–2	Nov 2022	M25 Salta, Argentina	WTT	Clay	Gonzalo Lama	6–4, 6–4
Win	6–2	Aug 2023	M25 Trujillo, Peru	WTT	Clay	Juan Pablo Ficovich	6–3, 6–0
Loss	6–3	Sep 2025	M25 Londrina, Brazil	WTT	Clay	Daniel Vallejo	4–6, 6–4, 3–6
Loss	6–4	Sep 2025	M25 Barueri, Brazil	WTT	Hard	Andrés Andrade	4–6, 3–6
Win	7–4	Nov 2025	M25 Lajeado, Brazil	WTT	Clay	Santiago Rodríguez Taverna	6–1, 6–4

Doubles: 7 (3 titles, 4 runner-ups)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Sep 2021	M25 Medellín, Colombia	WTT	Clay	Pedro Boscardin Dias	Gilbert Klier Jr. João Lucas Reis da Silva	4–6, 6–4, [8–10]
Win	1–1	Sep 2021	M15 Recife, Brazil	WTT	Clay (i)	Pedro Boscardin Dias	Daniel Dutra da Silva Marcelo Zormann	7–6(7–1), 3–6, [10–8]
Loss	1–2	Oct 2021	M25 Rio do Sul, Brazil	WTT	Clay	Pedro Boscardin Dias	Daniel Dutra da Silva Igor Marcondes	4–6, 3–6
Win	2–2	Nov 2021	M25 Aparecida de Goiânia, Brazil	WTT	Clay	Daniel Dutra da Silva	Alejandro González Matías Zukas	6–3, 6–3
Loss	2–3	Oct 2022	M25 Ibagué, Colombia	WTT	Clay	João Victor Couto Loureiro	Arklon Huertas del Pino Conner Huertas del Pino	2–6, 6–7(6–8)
Loss	2–4	Nov 2022	M25 Lajeado, Brazil	WTT	Clay	João Victor Couto Loureiro	Marcelo Zormann Orlando Luz	3–6, 2–6
Win	3–4	Dec 2022	M25 Vacaria, Brazil	WTT	Clay	João Victor Couto Loureiro	Igor Gimenez Grigoriy Lomakin	3–6, 7–6(7–5), [10–5]