Marcos Giron

He achieved a career-high singles ranking of No. 44 on 19 February 2024 and a doubles ranking of No. 194 on 1 August 2022. He won the boys' singles in the Ojai Tennis Tournament in 2009 and the men’s invitational in 2011. In 2014, Giron won the singles title at the 2014 NCAA Division I Tennis Championships for UCLA.

Marcos Giron

Giron at the 2023 Washington Open
Full name	Marcos Andres Giron
Country (sports)	United States
Residence	Thousand Oaks, California, U.S.
Born	(1993-07-24) July 24, 1993 (age 30) Thousand Oaks, California, U.S.
Height	5 ft 11 in (1.80 m)
Turned pro	2014
Plays	Right-handed (two-handed backhand)
College	UCLA
Coach	Maxime Tabatruong
Prize money	US $4,024,901
Singles
Career record	87–103 (45.8%) (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles	0
Highest ranking	No. 44 (19 February 2024)
Current ranking	No. 51 (22 April 2024)
Grand Slam singles results
Australian Open	1R (2020, 2021, 2022, 2023, 2024)
French Open	3R (2021, 2023)
Wimbledon	2R (2021, 2022, 2023)
US Open	2R (2020, 2021)
Other tournaments
Olympic Games	2R (2021)
Doubles
Career record	9–23 (28.1%) (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles	0
Highest ranking	No. 194 (1 August 2022)
Current ranking	No. 341 (8 April 2024)
Grand Slam doubles results
Australian Open	3R (2022)
French Open	2R (2023)
Wimbledon	1R (2022, 2023)
US Open	1R (2014, 2021, 2022)
Last updated on: 8 April 2024.

Giron was born in Thousand Oaks, California to Argentine and Ecuador parents.

2020: First Major wins & top 100 debut

Giron reached the second round of a major for the first time at the US Open where he defeated Marc Polmans in five sets. A month later, he reached the second round of the French Open, defeating Quentin Halys in five sets. In both victories, he came back from a two-sets-to-one deficit.

In November, Giron recorded his first top-ten win against seventh seed Matteo Berrettini at the Paris Masters.

2021: Major third round, Olympics & top 60 debuts

Giron started his 2021 season at the Murray River Open, an event that was organized as a lead-up tournament to the Australian Open due to other tournaments in Australia being cancelled as a result from the COVID-19 pandemic. He beat 10th seed, Adrian Mannarino, in the second round. He lost in the third round to eighth seed and eventual champion, Dan Evans. He participated in the main draw as a direct entry at the Australian Open for a second consecutive year. He lost in the first round to sixth seed and world No. 7, Alexander Zverev, in four sets.

At the Open Sud de France, Giron was defeated in the first round by qualifier Tallon Griekspoor. Getting past qualifying at the Rotterdam Open, he was eliminated in the first round by fourth seed, world No. 8, and eventual champion, Andrey Rublev.

In June, Giron reached the third round of a major at the French Open for the first time in his career.

At Halle, Giron reached his first quarterfinal at an ATP 500 level tournament as a qualifier where he was defeated by Félix Auger-Aliassime. As a result of this good run, he reached a then career-high of No. 65 on June 21, 2021.

Giron made the second round at the Olympics, beating Norbert Gombos before losing to Kei Nishikori in three sets.

In September at the Sofia Open, Giron reached his fourth quarterfinal of the season (with quarterfinal appearances in Halle, Metz and Winston-Salem) after defeating third seed Alex de Minaur in the second round. He later beat 8th seed John Millman in 70 minutes to move into his first career ATP tour-level semifinal, where he lost to second seed Gaël Monfils. As a result, he reached a new career-high ranking in the top 60, at world No. 59 on October 4, 2021.

2022: Top 50 debut & first ATP Tour final

Giron started his 2022 season at the first edition of the Melbourne Summer Set 1. He lost in the first round to qualifier Ričardas Berankis. At the Sydney Classic, he was defeated in the first round by Australian wildcard Jordan Thompson. At the Australian Open, he was beaten in the first round by sixth seed, world No. 5, and eventual champion Rafael Nadal.

Seeded 7th at the first edition of the Dallas Open, Giron upset world No. 19 Taylor Fritz in the quarterfinals to reach his second ATP tour semifinal. He lost in his semifinal match to 4th seed Jenson Brooksby in three sets despite holding four match points. In Delray Beach, he was defeated in the second round by John Millman. At the Mexican Open in Acapulco, he upset eighth seed and world No. 17 Pablo Carreño Busta in the second round. He lost in the quarterfinals to third seed and world No. 4 Stefanos Tsitsipas. At the Indian Wells Masters, he was eliminated in the first round by Lorenzo Musetti. In Miami, he lost in the first round to Márton Fucsovics.

Giron started his clay-court season at the U.S. Men's Clay Court Championships. He lost in the first round to world No. 30 Frances Tiafoe. At the Monte-Carlo Masters, he was defeated in the first round by eventual finalist Alejandro Davidovich Fokina. In Barcelona, he lost in the first round to Federico Coria. At the BMW Open in Munich, he fell in the first round to Hugo Gaston. At the Madrid Open, he was beaten in the first round of qualifying by Alejandro Tabilo. On his debut at the Italian Open as a lucky loser, he upset 12th seed Diego Schwartzman in the second round. He lost in the third round to Félix Auger-Aliassime. In Geneva, he lost in the first round to Ilya Ivashka. He made his top 50 debut on 16 May 2022. At the French Open, he was defeated in the first round by Grigor Dimitrov.

Giron started his grass-court season at the BOSS Open in Stuttgart. He lost in the first round to German wildcard Jan-Lennard Struff, despite having two match points in the third set tiebreak. At the Halle Open, he was defeated in the first round by Félix Auger-Aliassime. In Mallorca, he reached the quarterfinals where he lost to second seed Stefanos Tsitsipas. At Wimbledon, he upset 24th seed Holger Rune in the first round. He lost in the second round to Alex Molčan.

Giron started his US Open series at the Atlanta Open. He lost in the first round to Kwon Soon-woo despite leading by a break in the third set. At the Citi Open in Washington, D.C., he was defeated in the first round by eventual champion Nick Kyrgios. Getting past qualifying at the National Bank Open in Montreal, he lost in the first round to Roberto Bautista Agut. Making it past qualifying at the Western & Southern Open, he beat David Goffin in the first round. He was defeated in the second round by Bautista Agut. At the US Open, he lost in the first round to Frances Tiafoe.

Seeded third at the San Diego Open, Giron reached his maiden ATP tour final after defeating Dan Evans in his semifinal match. He lost in the final to Brandon Nakashima. Competing at the first edition of the Gijón Open, he was defeated in the second round by Dominic Thiem in three sets. In Antwerp, he lost in the first round to Sebastian Korda. At the Erste Bank Open in Vienna, he upset Cameron Norrie in the second round. He lost in his quarterfinal match to Grigor Dimitrov.

2023: Second French Open third round, two top 10 wins

Giron started his 2023 season at the Adelaide International 1. He lost in the second round to Australian qualifier Alexei Popyrin. In Auckland, he reached the quarterfinals where he was defeated by second seed Cameron Norrie. At the Australian Open, he lost in the first round to Daniil Medvedev.

Seeded seventh at the Dallas Open, Giron made it to the quarterfinals where he was beaten by top seed Taylor Fritz in a rematch from last year. At the Delray Beach Open, he upset eighth seed Ben Shelton in the first round. In the second round, he ended the dream ATP Tour debut of 33-year-old qualifier Matija Pecotić. He lost in his quarterfinal match to Miomir Kecmanović. In Acapulco, he was defeated in the first round by compatriot Michael Mmoh. At the BNP Paribas Open, he was eliminated from the tournament in the second round by Frances Tiafoe. At the Miami Open, he fell in the first round to qualifier Cristian Garín.

Giron started his clay-court season at the U.S. Men's Clay Court Championships. Seeded seventh, he lost in the second round to qualifier Tomáš Macháč. At the BMW Open, he upset seventh seed Roberto Carballés Baena in the first round. He ended up reaching the quarterfinals where he was defeated by Botic van de Zandschulp. Playing at the Madrid Open, he lost in the second round to 25th seed Sebastián Báez. He reached the third round at the 2023 French Open for a second time in his career and overall at a Major level defeating qualifier Hamad Međedović and Jiří Lehečka.

Giron qualified for the Canadian Open, with wins over Nick Chappell and Radu Albot. After defeating Emil Ruusuvuori in the first round, he upset world No. 6 Holger Rune in three sets, the biggest win of his career. He then lost to compatriot Tommy Paul in the third round.

At the ATP 500 2023 Japan Open Tennis Championships he reached the semifinals as a qualifier after defeating home favorite Yoshihito Nishioka, second seed Casper Ruud, his third top-10 win, and eight seed Félix Auger-Aliassime, last two matches in straight sets.

2024: Second ATP final, Top 45 debut

He reached his second ATP final at the 2024 Dallas Open defeating top seed Frances Tiafoe and fourth seed Adrian Mannarino in straight sets before losing to Tommy Paul. The following week at the 2024 Delray Beach Open, he reached for the first time a consecutive ATP semifinal (his sixth in his career), defeating Emilio Nava, again fourth seed Adrian Mannarino this time in three sets, and wildcard Patrick Kypson. He lost to defending champion and top seed Taylor Fritz in straight sets. As a result he reached a new career-high ranking in the top 45 on 19 February 2024.

Current through the 2024 Mutua Madrid Open.

Singles: 2 (2 runner-ups)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Sep 2022	San Diego Open, United States	250 Series	Hard	Brandon Nakashima	4–6, 4–6
Loss	0–2	Feb 2024	Dallas Open, United States	250 Series	Hard (i)	Tommy Paul	6–7(3–7), 7–5, 3–6

Singles: 13 (8–5)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	Sep 2013	USA F23, Claremont, California	Futures	Hard	Dennis Novikov	6–0, 7–5
Win	2–0	Sep 2013	USA F25, Laguna Niguel, California	Futures	Hard	Jarmere Jenkins	4–6, 6–1, 6–1
Win	3–0	Mar 2014	USA F9, Calabasas, California	Futures	Hard	Jason Jung	6–4, 4–6, 6–4
Loss	3–1	Nov 2014	Mexico F13, Mazatlán	Futures	Hard	Daniel Nguyen	0–6, 6–2, 6–7(0–7)
Win	4–1	Oct 2016	USA F33, Berkeley, California	Futures	Hard	André Göransson	5–7, 7–6(7–5), 6–4
Win	5–1	Jan 2017	USA F2, Long Beach, California	Futures	Hard	Collin Altamirano	7–6(7–3), 6–1
Loss	5–2	May 2017	China F7, Wuhan	Futures	Hard	Dayne Kelly	6–7(4–7), 6–7(6–8)
Win	6–2	May 2017	China F8, Fuzhou	Futures	Hard	Alexander Sarkissian	7–5, 6–4
Loss	6–3	Jul 2017	Canada F4, Saskatoon	Futures	Hard	Filip Peliwo	6–7(7–9), 7–6(7–5), 1–6
Loss	6–4	Mar 2018	USA F8, Calabasas, California	Futures	Hard	JC Aragone	2–6, 4–6
Win	7–4	Jan 2019	Orlando, USA	Challenger	Hard	Darian King	6–4, 6–4
Loss	7–5	Sep 2019	New Haven, USA	Challenger	Hard	Tommy Paul	3–6, 3–6
Win	8–5	Nov 2019	Houston, USA	Challenger	Hard	Ivo Karlović	7–5, 6–7(5–7), 7–6(11–9)

Doubles: 9 (5–4)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Sep 2012	USA F26, Irvine, California|Irvine	Futures	Hard	Dennis Novikov	Devin Britton   Austin Krajicek	2–6 ret.
Loss	0–2	Jun 2013	USA F17, Rochester, New York	Futures	Clay	Dennis Novikov	Chase Buchanan   Fernando Romboli	2–6, 3–6
Win	1–2	Jul 2013	USA F18, Pittsburgh	Futures	Clay	Connor Smith	Christopher Mengel   Jason Tahir	6–3, 6–3
Loss	1–3	Jul 2013	USA F20, Godfrey, Illinois	Futures	Hard	Devin McCarthy	Evan King   Peter Kobelt	5–7, 2–6
Win	2–3	Sep 2013	USA F24, Costa Mesa, California	Futures	Hard	Mackenzie McDonald	Keith-Patrick Crowley   Matt Fawcett	6–3, 6–2
Loss	2–4	Jun 2015	Canada F3, Richmond, British Columbia	Futures	Hard	Farris Fathi Gosea	Hunter Nicholas   Raymond Sarmiento	3–6, 4–6
Win	3–4	Aug 2015	Canada F6, Saskatoon	Futures	Hard	Farris Fathi Gosea	Patrick Davidson   Matt Reid	6–3, 6–2
Win	4–4	Feb 2019	Dallas, USA	Challenger	Hard (i)	Dennis Novikov	Ante Pavić   Ruan Roelofse	6–4, 7–6(7–3)
Win	5–4	Mar 2019	Indian Wells, USA	Challenger	Hard	JC Aragone	Darian King   Hunter Reese	6–4, 6–4

• He has a 3–17 (15.0%) record against players who were, at the time the match was played, ranked in the top 10.

#	Player	Rank	Event	Surface	Rd	Score	MGR
2020
1.	Matteo Berrettini	10	Paris Masters, France	Hard (i)	2R	7–6(7–3), 6–7(0–7), 7–5	91
2023
2.	Holger Rune	6	Canadian Open, Canada	Hard	2R	6–2, 4–6, 6–3	70
3.	Casper Ruud	8	Japan Open, Japan	Hard	2R	6–3, 6–4	79