By rikififi90 
Brazilian tennis player Thiago Monteiro started his Rio Open 2025 campaign with a dramatic comeback victory against Argentine Facundo Díaz Acosta, a former top 50 ATP player. The match, played on Monday night, February 17, at Quadra Guga Kuerten, lasted 2 hours and 38 minutes, with Monteiro sealing the win in a decisive tiebreak, scoring 6/3, 3/6, and 7/6 (7-3).
This triumph ended a difficult period for Monteiro, who had not won a main draw ATP match in nearly seven months. His last victory came in Umag in July 2024, after which he suffered seven consecutive losses in major tournaments, including Grand Slams, ATP events, and the Paris Olympics.
With this result, Monteiro advances to the Round of 16, where he will face the winner of the match between Chilean Alejandro Tabilo and Taiwanese Chun-Hsin Tseng, who played the last match of the day on Court 1. The Brazilian has a positive head-to-head record against both players, having defeated Tabilo in the Santo Domingo Challenger (2019) and Tseng in the Genoa Challenger (2023).
Thiago Monteiro do Brasil 💚💛 De virada, ele vence o argentino Diaz Acosta 3/6 6/3 7/6 (3) 💪
O brasileiro encara o vencedor de Tabilo x Tseng na próxima rodada!#RioOpen pic.twitter.com/CVacBybwuO
— Rio Open (@RioOpenOficial) February 18, 2025
Monteiro ends losing streak and seeks ATP ranking points
Monteiro entered the Rio Open 2025 ranked No. 99 in the ATP rankings, under pressure to defend the 100 points he earned in last year’s edition, where he reached the quarterfinals. With this opening-round victory, the Ceará-born player has already secured 50 points, but he needs to progress further in the tournament to maintain his ranking position.
So far in 2025, Monteiro has played eight matches, winning four. Three of those victories came in the Australian Open qualifiers, though he failed to reach the main draw. Last week, he was eliminated in the Buenos Aires ATP qualifying round by fellow Brazilian Felipe Meligeni, missing the chance to gain momentum before arriving in Rio.
If Monteiro secures another win at the Rio Open, he will match his best result at the tournament, having reached the quarterfinals in 2018 and 2024. This is his ninth appearance in the event, which remains one of the most prestigious ATP 500 tournaments in South America.
Facundo Díaz Acosta extends clay-court losing streak
Argentine Facundo Díaz Acosta, currently ranked No. 119, has yet to win a clay-court match in 2025. Since reaching the semifinals of the ATP 250 in Kitzbühel in July 2024, he has suffered first-round exits in Buenos Aires and Rio de Janeiro, further extending his winless streak on his preferred surface.
In 2024, Díaz Acosta made headlines by winning the Buenos Aires ATP title, but he has struggled to maintain that level. His loss to Monteiro marks another early exit, leaving him without an ATP main draw win since August 2024.
Match analysis: Monteiro turns the tide in a thrilling tiebreak
Monteiro and Díaz Acosta delivered a highly competitive match, with momentum shifts throughout the three sets. The Argentine started stronger, applying pressure on Monteiro’s serve and breaking early in the third game of the first set. Holding onto that advantage, Díaz Acosta closed the set at 6/3.
In the second set, Monteiro improved significantly on his first-serve percentage, jumping from 57% to 71%, which helped him control the rallies and avoid being broken. The Brazilian broke serve in the second game and defended a break point soon after, leveling the match by winning the set 6/3.
The third set was the tightest of the match, with neither player managing a break. Monteiro had a break-point opportunity in the opening game, but Díaz Acosta held firm. The set ultimately reached a tiebreak, where Monteiro capitalized on his opponent’s fatigue and errors, opening a 5-1 lead before closing out the match at 7-3.
Monteiro’s history at the Rio Open and next challenges
Thiago Monteiro is competing in the Rio Open for the ninth time and has reached the quarterfinals twice (2018 and 2024). The tournament, held at the Jockey Club Brasileiro, is the premier ATP 500 event in South America and a crucial stop in the Latin American clay-court swing.
The Brazilian has never reached the semifinals in Rio but has a solid chance this year, especially if he continues to build on the momentum from his opening-round win. His next opponent will be Tabilo or Tseng, both of whom he has defeated in previous meetings.
Brazilian players in the Rio Open 2025
Monteiro is among several Brazilian players competing in this year’s Rio Open. The main draw features Felipe Meligeni, João Fonseca, and Gustavo Heide, all looking to make deep runs in the tournament.
The event also includes top-ranked international players, such as Carlos Alcaraz, the tournament’s No. 1 seed, and defending champion Cameron Norrie, adding extra competitiveness to the field.
Monteiro’s ATP career and ranking history
Thiago Monteiro has been a consistent presence in the ATP top 100 but has struggled to break into the top 50. His career-high ranking of No. 61 came in 2021, and since then, he has oscillated between ATP main draws and Challenger-level events.
Monteiro’s most notable achievement was winning the Genoa Challenger title in 2023. In Grand Slams, he has participated in all four major tournaments (Australian Open, Roland Garros, Wimbledon, and the US Open) but has never progressed beyond the second round. His best results in Roland Garros, the premier clay-court Grand Slam, include reaching the final round of qualifying in 2019 and 2023.
Expectations for Monteiro’s next match
With his victory over Díaz Acosta, Monteiro now looks forward to his Round of 16 match. A win would not only propel him further in the tournament but could also boost his ranking inside the ATP top 80.
To advance, Monteiro will need to maintain his strong serving performance and minimize unforced errors. If he reaches the quarterfinals, he could face higher-seeded players such as Nicolás Jarry or Sebastián Báez, both known for their clay-court expertise.
Brazilian tennis player Thiago Monteiro started his Rio Open 2025 campaign with a dramatic comeback victory against Argentine Facundo Díaz Acosta, a former top 50 ATP player. The match, played on Monday night, February 17, at Quadra Guga Kuerten, lasted 2 hours and 38 minutes, with Monteiro sealing the win in a decisive tiebreak, scoring 6/3, 3/6, and 7/6 (7-3).
This triumph ended a difficult period for Monteiro, who had not won a main draw ATP match in nearly seven months. His last victory came in Umag in July 2024, after which he suffered seven consecutive losses in major tournaments, including Grand Slams, ATP events, and the Paris Olympics.
With this result, Monteiro advances to the Round of 16, where he will face the winner of the match between Chilean Alejandro Tabilo and Taiwanese Chun-Hsin Tseng, who played the last match of the day on Court 1. The Brazilian has a positive head-to-head record against both players, having defeated Tabilo in the Santo Domingo Challenger (2019) and Tseng in the Genoa Challenger (2023).
Thiago Monteiro do Brasil 💚💛 De virada, ele vence o argentino Diaz Acosta 3/6 6/3 7/6 (3) 💪
O brasileiro encara o vencedor de Tabilo x Tseng na próxima rodada!#RioOpen pic.twitter.com/CVacBybwuO
— Rio Open (@RioOpenOficial) February 18, 2025
Monteiro ends losing streak and seeks ATP ranking points
Monteiro entered the Rio Open 2025 ranked No. 99 in the ATP rankings, under pressure to defend the 100 points he earned in last year’s edition, where he reached the quarterfinals. With this opening-round victory, the Ceará-born player has already secured 50 points, but he needs to progress further in the tournament to maintain his ranking position.
So far in 2025, Monteiro has played eight matches, winning four. Three of those victories came in the Australian Open qualifiers, though he failed to reach the main draw. Last week, he was eliminated in the Buenos Aires ATP qualifying round by fellow Brazilian Felipe Meligeni, missing the chance to gain momentum before arriving in Rio.
If Monteiro secures another win at the Rio Open, he will match his best result at the tournament, having reached the quarterfinals in 2018 and 2024. This is his ninth appearance in the event, which remains one of the most prestigious ATP 500 tournaments in South America.
Facundo Díaz Acosta extends clay-court losing streak
Argentine Facundo Díaz Acosta, currently ranked No. 119, has yet to win a clay-court match in 2025. Since reaching the semifinals of the ATP 250 in Kitzbühel in July 2024, he has suffered first-round exits in Buenos Aires and Rio de Janeiro, further extending his winless streak on his preferred surface.
In 2024, Díaz Acosta made headlines by winning the Buenos Aires ATP title, but he has struggled to maintain that level. His loss to Monteiro marks another early exit, leaving him without an ATP main draw win since August 2024.
Match analysis: Monteiro turns the tide in a thrilling tiebreak
Monteiro and Díaz Acosta delivered a highly competitive match, with momentum shifts throughout the three sets. The Argentine started stronger, applying pressure on Monteiro’s serve and breaking early in the third game of the first set. Holding onto that advantage, Díaz Acosta closed the set at 6/3.
In the second set, Monteiro improved significantly on his first-serve percentage, jumping from 57% to 71%, which helped him control the rallies and avoid being broken. The Brazilian broke serve in the second game and defended a break point soon after, leveling the match by winning the set 6/3.
The third set was the tightest of the match, with neither player managing a break. Monteiro had a break-point opportunity in the opening game, but Díaz Acosta held firm. The set ultimately reached a tiebreak, where Monteiro capitalized on his opponent’s fatigue and errors, opening a 5-1 lead before closing out the match at 7-3.
Monteiro’s history at the Rio Open and next challenges
Thiago Monteiro is competing in the Rio Open for the ninth time and has reached the quarterfinals twice (2018 and 2024). The tournament, held at the Jockey Club Brasileiro, is the premier ATP 500 event in South America and a crucial stop in the Latin American clay-court swing.
The Brazilian has never reached the semifinals in Rio but has a solid chance this year, especially if he continues to build on the momentum from his opening-round win. His next opponent will be Tabilo or Tseng, both of whom he has defeated in previous meetings.
Brazilian players in the Rio Open 2025
Monteiro is among several Brazilian players competing in this year’s Rio Open. The main draw features Felipe Meligeni, João Fonseca, and Gustavo Heide, all looking to make deep runs in the tournament.
The event also includes top-ranked international players, such as Carlos Alcaraz, the tournament’s No. 1 seed, and defending champion Cameron Norrie, adding extra competitiveness to the field.
Monteiro’s ATP career and ranking history
Thiago Monteiro has been a consistent presence in the ATP top 100 but has struggled to break into the top 50. His career-high ranking of No. 61 came in 2021, and since then, he has oscillated between ATP main draws and Challenger-level events.
Monteiro’s most notable achievement was winning the Genoa Challenger title in 2023. In Grand Slams, he has participated in all four major tournaments (Australian Open, Roland Garros, Wimbledon, and the US Open) but has never progressed beyond the second round. His best results in Roland Garros, the premier clay-court Grand Slam, include reaching the final round of qualifying in 2019 and 2023.
Expectations for Monteiro’s next match
With his victory over Díaz Acosta, Monteiro now looks forward to his Round of 16 match. A win would not only propel him further in the tournament but could also boost his ranking inside the ATP top 80.
To advance, Monteiro will need to maintain his strong serving performance and minimize unforced errors. If he reaches the quarterfinals, he could face higher-seeded players such as Nicolás Jarry or Sebastián Báez, both known for their clay-court expertise.
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