Connecting tennis players to elite opportunities since 1990.

The experts in sourcing the best opportunities in France, the U.S., and worldwide, GSC has been guiding players and their families on and off the court for over 30 years.

What we do

We Help Top Players Grow

College Placement

We help serious athletes find their best fit in U.S. college tennis with trusted guidance, personalized support, and strong coach connections, maximizing your academic and athletic journey.

Cultural Immersion

We move top players through France’s best tournaments with tailored schedules, insider access, and support at every step, giving you the matches and cultural experience you can’t find anywhere else.

Team Trips

Combine world-class tennis with team bonding and iconic cities. We handle group trips for players, coaches, and sponsors, with matches, training, sightseeing, and full support.

Trusted by 1K+ players, coaches and tennis professionals worldwide

Read testimonials

About Us

Where Ambition Meets Access.

We’ve helped thousands of players bridge the gap between junior tennis and the next level. We’re expanding what’s possible, connecting athletes across borders with real opportunities on both sides of the Atlantic.

From France to the U.S.

We’ve placed hundreds of French players into top U.S. college tennis programs, thanks to decades of trust with coaches and firsthand experience with the American system.

From the U.S. to France

We take serious American players into the French tournament circuit with tailored schedules and full immersion in one of the world’s richest tennis and cultural ecosystems.

100+ current players

across U.S. schools

100+ current GSC players

across U.S. schools

The GSC Difference

Trusted by Ambitious Players Worldwide

We’ve spent decades building close ties with U.S. college coaches, French tournament organizers, top clubs, and recruiting insiders. Whether you’re looking to study, compete, or explore, we unlock opportunities others can’t.

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Years of experience

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Players guided

Meet the team

The People Behind GSC

Mark Ozer – Co-Founder

Former ATP pro and Ivy League standout, Mark brings over 30 years of experience connecting top players to international competition. A Princeton captain and All-Ivy honoree, he reached #474 ATP in singles, #155 in doubles, and held national rankings of #29 in France (14+ UTR) and #6 in Switzerland. Fluent in English and French, Mark also earned an MBA from Northwestern’s Kellogg School of Management and served as assistant coach at Duke, helping the team reach #4 nationally. He is co-founder of ExecOnline, which partners with 11 of the world’s top business schools including Stanford, Wharton, Columbia, MIT, and IMD.

Marc Legris – European Manager

For over two decades, Marc has been the driving force behind GSC’s operations, leading the company’s European efforts and overseeing the successful placement of hundreds of international players into U.S. college tennis programs. Based in France, he has built deep relationships with American coaches and key figures in French tennis, making him one of the most trusted
advisors in the college recruitment space.

A former #1 at New Mexico State University, Marc reached #37 in NCAA Division 1 singles and held a French national ranking of -4/6 (UTR 12.8). Fluent in French, English, and Spanish, he brings both personal playing experience and unmatched expertise in navigating the U.S. college tennis system.

Each year, Marc personally guides dozens of top players through the recruitment process, from early advising to scholarship negotiations, ensuring they find the best fit both athletically and academically.

Meet the team

The People Behind GSC

Mark Ozer – Co-Founder

Former ATP pro and Ivy League standout, Mark brings over 30 years of experience connecting top players to international competition. A Princeton captain and All-Ivy honoree, he reached #474 ATP in singles, #155 in doubles, and held national rankings of #29 in France (14+ UTR) and #6 in Switzerland. Fluent in English and French, Mark also earned an MBA from Northwestern’s Kellogg School of Management and served as assistant coach at Duke, helping the team reach #4 nationally. He is co-founder of ExecOnline, which partners with 11 of the world’s top business schools including Stanford, Wharton, Columbia, MIT, and IMD.

Marc Legris – European Manager

For over two decades, Marc has been the driving force behind GSC’s operations, leading the company’s European efforts and overseeing the successful placement of hundreds of international players into U.S. college tennis programs. Based in France, he has built deep relationships with American coaches and key figures in French tennis, making him one of the most trusted advisors in the college recruitment space.


A former #1 at New Mexico State University, Marc reached #37 in NCAA Division 1 singles and held a French national ranking of -4/6 (UTR 12.8). Fluent in French, English, and Spanish, he brings both personal playing experience and unmatched expertise in navigating the U.S. college tennis system.


Each year, Marc personally guides dozens of top players through the recruitment process, from early advising to scholarship negotiations, ensuring they find the best fit both athletically and academically.

Some Words From Our Clients

GSC provides great service in my experience with them. Our team had a great team trip and got a lot out of it. France is one of the great places to play tennis in the world with many great tournaments for any level of tennis player. No one knows the tournaments better than GSC, they will find the right tournaments for you.

Peter Smith

Team Connexion

5× NCAA Champion, USC Men’s Tennis Head Coach (2003–2019)

Going to the U.S. was one of the best decisions I’ve ever made. It’s an experience I recommend to everyone, both for the incredible people you meet and the personal growth it brings. GSC helped me make the best possible choice when it came to finding the school that fit me best.

Marie Mattel

College Connexion

University of Central Florida (2019-2023)

I’ve used GSC to compete in French tournaments. They helped me play 15 to 25 matches in 2 to 4 weeks, something you just can’t do in the US. These tournaments exposed me to new players and styles, which really helped me during college season.

Nicholas Steiglehner

Tournament Connexion

University of Michigan (2022-2026)

Discoverwith GSC

200+ Universities Attended



200+ Universities Attended


Tailored Service for everyone

Whether you’re aiming for match play, U.S. college placement, or full cultural immersion, we tailor every experience to your goals, schedule, and budget.

Tournament Connexion

For Junior & College Players

Tournament Scheduling

Local Coaching & Access

Full Cultural Immersion

College Connexion

For Every Player

School Selection

Paperwork Support

Scholarship Negotiation

Custom Packages

For Coaches and Academies

Travel Arrangements

Special Events

On-Site Support 

Got Questions? We’ve Got Answers.

Here are the most common questions players and parents ask about GSC and how we work. Still curious? Reach out anytime.

Who can join the GSC programs?

Any serious tennis player ready to take their game and experience to the next level, whether you’re aiming for college tennis, international tournaments, or full cultural immersion in France.

How does College Connexion help with U.S. college placement?

We guide you through the entire process, from finding the right college fit, scholarship negotiation, to handling all the paperwork, making your transition smooth and focused on tennis and academics.

What support do players get when competing abroad?

We provide personalized travel planning, peer and coach pairings, translator services, and even chaperones for younger players. We’re there every step of the way.

How flexible are the programs?

Very. Each experience is tailored to your schedule, budget, and goals. Whether it’s a few tournaments, a college placement, or a full season abroad, we build a plan that fits you.

What’s the first step to join GSC?

Contact us to discuss your goals. From there, we’ll create a customized plan and guide you through the next steps, whether that’s college recruiting or tournament scheduling.


Get in Touch

Serious About Tennis? So Are We.


Whether you’re aiming for college, competition, or something in between, we help you map out the right plan and make it happen.

Marc Legris

Where do you see yourself playing next year?

GSC blog

Player News & Helpful Guides