Born on July 24, 1993, in Thousand Oaks, California, Marcos Giron started his tennis journey at the age of six. Inspired by his mother who used to feed him balls at a local park, he found early joy in the game. Giron’s formative years were rooted in California’s vibrant tennis scene, and by 2011, he was the top high school recruit in the country. He went on to play for UCLA and made waves in college tennis by winning the 2014 NCAA Singles Championship.

Turning professional that same year, Giron opted to forgo his final college season after finishing ranked No. 1 nationally. His early pro years were plagued by adversity—hip surgeries in 2015 and 2016 kept him sidelined for nearly a year. But he returned stronger, proving his mental toughness was as elite as his forehand. Giron’s dedication was also evident off the court—he briefly served as a volunteer assistant coach at UCLA during recovery, helping to mold future players while sharpening his own understanding of the game.

How many Grand Slam titles does Marcos Giron have?

As of 2025, Giron has not won a Grand Slam—but don’t be mistaken. His career is full of tough performances on the sport’s biggest stages. He’s made it to the third round at the 2021 French Open and seond round apperances at the 2020 & 2021 US Open along with the Australian Open and has made repeat second-round appearance at Wimbledon.

While some might see the lack of titles as a gap, Marcos Giron’s deep runs in majors show he can hold his own against top-tier competition. At the 2025 Australian Open, he clawed past Yannick Hanfmann (2–6, 7–5, 6–1, 7–5) and Tomás Martín Etcheverry (7–5, 3–6, 7–5, 3–6, 6–4) in tough four-set and five-set battles before falling to Jannik Sinner. That run alone showcased his improved serve, mental grit, and ability to push elite players.

The tennis world knows Grand Slam titles require more than raw skill—they demand timing, health, and momentum. And as Giron hits his 30s in peak physical form with a smarter, more strategic approach, it’s safe to say the doors to second-week Slam appearances—and maybe a surprise semifinal—are still wide open.

Marcos Giron’s ATP rank and career high

At the time of May 2025, Giron ranks No. 43 in the ATP rankings. He achieved a career-high ranking of No. 37 in August 2024 after a standout performance at the Hall of Fame Open at Newport when he won his maiden ATP title.

Staying in the top 50 is no easy feat, especially on today’s ultra-competitive ATP circuit. But Marcos Giron’s consistency and adaptability have helped him maintain that spot over the past few years. From clay to hard courts, he’s carved out a reputation as a dependable grinder who doesn’t back down—even when matched against seeded powerhouses.

His steady ranking climb has been a long time coming. After entering the pro ranks in 2014, injuries slowed his momentum. But since breaking into the top 100 in 2020, Giron has found his rhythm, particularly at ATP 250 and 500 events. His recent upsets over top-20 opponents, including Holger Rune and Taylor Fritz, have only cemented his place as one of the most dangerous floaters in any draw.

Marcos Giron’s stats and performance overview

At 5’11” and 170 lbs, Giron possesses a deceptively strong game based on footwork, patience, and accuracy. A right-handed two-handed backhand player whose style is a baseline counter-puncher’s—tactical, gritty, and unfazed by being behind a point.

As of 2025, Marcos Giron has a 14-10 win-loss record in his ATP main draws and performances in Rome and Munich were strong. He has a main draw ATP record of around 118-129 in total, but that doesn’t give the full picture. He excels at upsetting top players and when the pressure’s on his level rises.

There’s not a lot of flash in Giron’s service game—it’s placement and spin. His return game might be his greatest weapon. Add in elite rally tolerance, and you have a player who excels at win-thin marathons on hard and clay surfaces. In a grinding style that breaks opponents down and induces errors, Giron’s the type who can destroy anyone’s draw day.

Marcos Giron’s medals, awards, and achievements

Marco Giron’s trophy cabinet may not be full, but his professional life has plenty of significant accomplishments. He began by winning the 2014 NCAA Singles Championship at UCLA, an award that set the stage for pro success. The 2024 ATP Newport championship victory remains his crowning glory as a pro.

Additional than that, Marcos Giron has racked up a number of ATP Challenger titles including championships in Houston and Orlando. He’s defeated top-notch opponents in the form of Holger Rune, Matteo Berrettini and Grigor Dimitrov, demonstrating he’s not merely padding a draw—he’s building it.

One of his highlight moments was in 2021 at Roland-Garros when he advanced to the third round after upsetting Dimitrov in a five-set match. He has also represented Team USA’s tennis at top-level team competitions like the 2021 Olympics and Davis Cup matches.

Recognition isn’t about titles—it’s about making an impact. Giron’s game and narrative made him a fan favorite among those who appreciate grit over flash. And as he enters the 2025 French Open, he’s still winning, still seeking moments, and still reminding everyone why his story counts.

Marcos Giron Tennis records

Though Giron might not have a résumé full of titles under his belt, his numbers speak volumes about a fighter. At the time of May 2025, he’s amassed a total ATP win-loss tally of 118-129, a testament to years of grinding through qualifying draws, upsetting seeded players, and fighting for every victory.

Marcos Giron has appeared in over 15 Grand Slam main draws and has won over $5.5 million in prize money throughout his career. His best surfaces remain hard and clay courts, and his greatest victories tend to be in close three-set matches or long five-set matches at the Slams.

At ATP 250 and 500 events, he’s a familiar sight, accumulating victories against top-flight opponents and gaining a reputation as a perilous draw spoiler. From a final at Dallas in 2024 on through regular third-round appearances at Roland-Garros and the US Open, Giron’s résumé demonstrates improvement, determination, and a flair for producing his best tennis at the right moments.

Whether Davis Cup spots or ATP-level breakthroughs, Giron has demonstrated his ability to hold his own alongside the top players, and each match he plays constitutes another building block in a blue-collar career continuing upward.

Marcos Giron’s girlfriend

As of 2025, Giron is in a long-term relationship with Rebecca Dehnel, often seen supporting him at tournaments around the world. The pair have kept much of their relationship private over the years, but occasional glimpses on social media and interviews reveal a strong and supportive bond. They’ve been together since the mid-2010s, with their shared moments—from artwork to walks with their dog—showcasing a genuine connection.

Rebecca, originally from San Diego, is deeply involved in the healthcare field. She’s a standout in global health and family medicine, currently in residency at Long Beach Memorial. Her passion extends into areas like refugee care and gender-affirming healthcare, showing that the couple supports one another’s demanding careers.

In interviews, Marcos Giron has opened up about how crucial Rebecca and his family have been in his life, especially during the rough patches, including his injury setbacks and his parents’ divorce in 2014. With Rebecca by his side, Giron has found not just emotional balance but also the confidence to keep pushing through the ATP grind.

Who are Marcos Giron’s parents?

Giron’s parents, Andres and Rosanna Giron, have played a foundational role in shaping his life and career. His father is a Spanish-American physician, while his mother works in the field of healthcare and has been a constant source of encouragement. Both instilled in Marcos a strong work ethic and passion for helping others.

It was his father who introduced him to tennis, often taking him to the courts and fostering a love for the sport from a young age. Marcos Giron has said that had he not become a tennis player, he likely would have pursued a career in medicine like his father. That drive to serve others is something Giron has carried with him on and off the court.

Their support has been critical, especially during challenging periods, such as when Marcos underwent hip surgeries or when his parents divorced in 2014. Through it all, their belief in him never wavered—and it’s a big reason he continues to thrive today.

Marcos Giron’s net worth

As of 2025, his net worth stands at approximately $3.5 million. This consists of his prize money earnings from the ATP, which amount to over $5.5 million, as well as endorsement contracts, sponsorships, and fee-for-appearance earnings.

Despite not having any Grand Slams under his belt, Marcos Giron has established his financial base through consistency on the ATP tour. He has achieved a steady income stream through his 2024 Newport title victory and appearances at multiple ATP 250 finals and Challenger titles. He has also gained bonuses through appearances in his country’s national team and being part of the Olympic delegation.

Coupled with a fairly low-profile lifestyle and longtime endorsements, Giron’s monetary well-being seems secure as he carries on his tour campaign into his 30s.

Marcos Giron’s endorsement deals and sponsorship earnings

Giron’s supported by Yonex for clothing and for his racquets as well. He plays with the Yonex Percept 97 racquet and generally has Yonex Polytour Rev as his string of choice, a setup designed for control and spin. He’s supported Yonex for a few years now, and it’s a key component of his equipment arsenal.

Marcos Giron’s also involved with smaller wellness brands and performance-driven companies, demonstrating his interest in longevity and athletic well-being. Although he’s not gotten big headline deals like top-10 stars, his endorsements offer steady off-court revenue.

With increasing rankings in the ATP top 50 and a slew of recent impressive performances on court, Giron’s marketability only improves. If he continues to push through in the Slams or wins another ATP tourney, look for even more brand sponsorships on his doorstep

Where is Marcos Giron from?

Thousand Oaks, California—where top-notch athletes and a rich tennis tradition thrive—is the hometown of Giron. Having grown up on SoCal’s competitive junior tour of tennis and practicing and competing alongside the country’s best young players, Giron developed a well-rounded all-court game and tough-competitive mindset through his experiences.

Currently based in the United States, Marcos Giron alternates his training between California and Florida based on the time of year and calendar of tournaments. He also trains in Europe prior to the clay-court season in order to prepare for tournaments such as those at Roland-Garros.

His California heritage remains strong, however. He returns home regularly to work with young players and engage with the tennis community that moulded him. In a sport where a lot of global travel can isolate players from their homes, Giron embraces his California pride.

Who is Marcos Giron’s present coach in 2025?

In 2025, Giron is coached by Maxime Tabatruong, a former French professional player known for his emphasis on movement and return play. Prior to working with Tabatruong, Giron also trained under former pros Robby Ginepri and Devin Bowen.

With Tabatruong, Marcos Giron has leaned into physical preparation and clay-court tactics—an essential focus for success at the French Open. The pair have worked extensively on building point construction, minimizing unforced errors, and using footwork to maintain consistency under pressure.

Their chemistry has shown results. Giron’s 2024 Newport title and his recent rise back into the top 50 reflect how well the coaching relationship is working. If his form holds, expect this duo to keep making noise through the 2025 season.

Final thoughts

Marcos Giron may not always make the headlines, but his story resonates with tennis fans who appreciate heart, hustle, and resilience. From college champion to comeback specialist, from Challenger courts to Slam showdowns—he’s fought for every inch of his career.

Heading into the 2025 French Open, Giron’s mix of experience, endurance, and underdog energy makes him a dangerous floater in any section of the draw. He’s already knocked off some of the world’s best and is more than capable of doing it again.

In an era of booming serves and highlight reels, Marcos Giron stands out by doing the gritty work. And sometimes, that’s what makes a true fan favorite.