AGATHANo gut feelings
Thiago Monteiro

TennisATPLeft-handed

Thiago Monteiro

BrazilAge and results

Thiago Monteiro is a tennis player on the ATP Tour who reached a career-high ranking of No. 61 on October 17, 2022.

237 ATP Tour matches

Updated

About Thiago Monteiro

Thiago Monteiro is a tennis player on the ATP Tour. Born on May 31, 1994, in Fortaleza, Ceara, Brazil, he plays left-handed with a two-handed backhand. His coaches are Ruben Ramirez-Hidalgo and Pablo Fuentes, and he turned pro in 2011. A career-high ATP Tour ranking of No. 61 came on October 17, 2022.

Match history237

Every ATP Tour, Grand Slam and Olympic main-draw match in our records, newest first. A walkover is listed but never counted in a record.

2026: 4-4

DateTournamentRoundOpponentResultScoreSurface
Jul 12EFG Swiss Open GstaadQualifying FinalDylan DietrichL6-3, 3-6, 4-6Clay
Jul 11EFG Swiss Open GstaadQualifying 1st RoundPierre-Hugues HerbertW7-6(7), 6-7(4), 7-6(8)Clay
Feb 21BCI Seguros Chile OpenQualifying 1st RoundAdolfo Daniel VallejoL7-6(3), 4-6, 2-6Clay
Feb 17Rio OpenRound 1Joao FonsecaL6-7(1), 1-6Clay
Feb 15Rio OpenQualifying FinalDusan LajovicW2-6, 6-3, 6-3Clay
Feb 14Rio OpenQualifying 1st RoundAdolfo Daniel VallejoW6-4, 6-1Clay
Feb 8Argentina OpenQualifying FinalHugo DellienL1-6, 3-6Clay
Feb 7Argentina OpenQualifying 1st RoundFranco AgamenoneW6-4, 6-0Clay

How he is doing nowThrough Jul 12

2026 record0-1clay 0-1
Last 104-6LWLLWWLWLLNewest first. Lost his last match.

CareerPro since 2011

15years2011 to 2026
  1. 2011First ATP matchLost to Juan Pablo Brzezicki, ATP Brasil Open
  2. 2022Career high No. 61Oct 17, 2022
  3. Feb 17, 2026Latest matchLost to Joao Fonseca, Rio Open

Grand Slam titles

AO0Round 2 (2021)1-7 in our records
RG0Round 3 (2020)7-8 in our records
WIM0Round 2 (2017)4-6 in our records
USO0Round 2 (2022)2-8 in our records

Honors

  • Pan American Games bronze medal, singles, Santiago 2023

First ATP match

Feb 5, 2011: lost to Juan Pablo Brzezicki 3-6, 1-6ATP Brasil Open, on clay

Latest match

Feb 17, 2026: lost to Joao Fonseca 6-7, 1-6Rio Open, Round 1, on clay court

Challenger and ITF finals

Challenger: 18 singles finals, 9 won; 2 doubles finals. ITF: 8 singles finals, 5 won; 4 doubles finals, 2 won. From 2011 to 2026.

Singles

  1. L
    Sep 2026Runner-up at Szczecin Open, Poland (clay), losing to Nikolas Sanchez Izquierdo 6-4, 3-6, 6-7(6-8).
  2. L
    Mar 2025Runner-up at Paraguay Open, Paraguay (clay), losing to Emilio Nava 5-7, 3-6.
  3. L
    Mar 2025Runner-up at Santiago Challenger, Chile (clay), losing to Daniel Elahi Galan 5-7, 3-6.
  4. L
    Nov 2023Runner-up at Uruguay Open, Uruguay (clay), losing to Facundo Diaz Acosta 3-6, 3-5 ret.
  5. W
    Oct 2023Won the title at Campinas International, Brazil (clay), beating Camilo Ugo Carabelli 3-6, 6-4, 6-4.
  6. W
    Sep 2022Won the title at AON Open, Italy (clay), beating Andrea Pellegrino 6-1, 7-6(7-2).
  7. W
    Jul 2022Won the title at Salzburg Open, Austria (clay), beating Norbert Gombos 6-3, 7-6(7-2).
  8. L
    Nov 2021Runner-up at Campinas International, Brazil (clay), losing to Sebastian Baez 1-6, 4-6.
Show 18 more
  1. L
    Oct 2021Runner-up at Buenos Aires Challenger, Argentina (clay), losing to Sebastian Baez 4-6, 0-6.
  2. W
    Sep 2021Won the title at Braga Open, Portugal (clay), beating Nikola Milojevic 7-5, 7-5.
  3. L
    Sep 2020Runner-up at Forli International, Italy (clay), losing to Lorenzo Musetti 6-7(2-7), 6-7(5-7).
  4. W
    Jan 2020Won the title at Punta Open, Uruguay (2) (clay), beating Marco Cecchinato 7-6(7-3), 6-7(6-8), 7-5.
  5. W
    Oct 2019Won the title at Lima Challenger, Peru (clay), beating Federico Coria 6-2, 6-7(7-9), 6-4.
  6. W
    Jul 2019Won the title at Sparkassen Open, Germany (clay), beating Tobias Kamke 7-6(8-6), 6-1.
  7. W
    Jan 2019Won the title at Punta Open, Uruguay (clay), beating Facundo Arguello 3-6, 6-2, 6-3.
  8. L
    Sep 2016Runner-up at Santos International, Brazil (clay), losing to Renzo Olivo 4-6, 6-7(5-7).
  9. L
    Jun 2016Runner-up at Lyon Open, France (clay), losing to Steve Darcis 6-3, 2-6, 0-6.
  10. W
    May 2016Won the title at Pays d'Aix Open, France (clay), beating Carlos Berlocq 4-6, 6-4, 6-1.
  11. W
    Jun 2014Won the title at F4 Middelburg, Netherlands (clay), beating Boy Westerhof 6-4, 6-7(2-7), 7-5.
  12. L
    Jun 2013Runner-up at F1 Amstelveen, Netherlands (clay), losing to Bjorn Fratangelo 6-3, 4-6, 3-6.
  13. W
    Apr 2013Won the title at F14 Antalya, Turkey (hard), beating Jan Minar 7-6(7-2), 6-4.
  14. W
    Apr 2013Won the title at F15 Antalya, Turkey (hard), beating Jose Hernandez-Fernandez 6-3, 7-6(7-5).
  15. L
    Nov 2012Runner-up at F32 Porto Alegre, Brazil (clay), losing to Pedro Zerbini 3-6, 2-6.
  16. L
    Aug 2012Runner-up at F21 Sao Jose do Rio Preto, Brazil (clay), losing to Nicolas Santos 2-6, 2-6.
  17. W
    May 2012Won the title at F11 Bauru, Brazil (clay), beating Leonardo Kirche 2-6, 6-2, 7-6(8-6).
  18. W
    Nov 2011Won the title at F38 Salvador, Brazil (hard), beating Alexandre Schnitman 7-6(7-2), 6-4.

Doubles

  1. L
    Nov 2018Runner-up at Guayaquil Challenger, Ecuador (clay) with Fabricio Neis, losing to Guillermo Duran and Roberto Quiroz 3-6, 2-6.
  2. W
    May 2015Won the title at F3 Pantiani, Georgia (clay) with Marco Bortolotti, beating Ivan Kalinin and Victor Baluda 7-6(9-7), 7-5.
  3. L
    Dec 2014Runner-up at F2 Santiago de los Caballeros, Dominican Republic (clay) with Fabiano de Paula, losing to Duilio Beretta and Hugo Dellien 6-3, 4-6, [8-10].
  4. L
    Jun 2014Runner-up at F3 Breda, Netherlands (clay) with Jorge Aguilar, losing to Wilson Leite and Christian Lindell 3-6, 5-7.
  5. L
    Sep 2013Runner-up at Tetra Pak Tennis Cup, Brazil (clay) with Thiago Alves, losing to Guido Andreozzi and Maximo Gonzalez 4-6, 4-6.
  6. W
    Mar 2013Won the title at F12 Antalya, Turkey (hard) with Maximiliano Estevez, beating Kirill Dmitriev and Yaraslav Shyla 5-7, 6-2, [10-6].

Most often against

The players he has met most in our records, with the head-to-head.

3-3All square

Last: Feb 28, 2023, BCI Seguros Chile Open Round 1, won

Dusan Lajovic6 meetings
4-2Monteiro leads

Last: Feb 15, 2026, Rio Open Qualifying Final, won

Casper Ruud4 meetings
1-3Monteiro trails

Last: Jul 17, 2024, Nordea Open Round 2, won

2-2All square

Last: May 20, 2023, Gonet Geneva Open Qualifying 1st Round, won

Gael Monfils4 meetings
3-1Monteiro leads

Last: May 8, 2024, Italian Open Round 1, won

Guido Pella4 meetings
2-2All square

Last: Jul 24, 2023, Bitpanda Hamburg Open Round 1, lost

Sources and updates

Results and schedules come from Agatha's own records of the ATP Tour.

Updated Nov 12, 2026, 7:21 AM ET. Results and form refresh after every match; biography facts are checked weekly.