Tennis court guide

Clay tennis courts: what they are and where to actually play on one

Clay is the French Open surface, the surface most associated with long rallies and sliding, and still the one most American recreational players rarely get to try. If you have only played on hard courts, clay feels different immediately.

Red clay: Crushed brick over limestone, the French Open surface. Almost no actual clay in it. At Roland Garros, the visible red layer is only a thin top dressing of crushed brick over a limestone playing foundation
Green clay: Har-Tru, crushed metabasalt stone from Virginia. Slightly firmer and faster than red. The more common American version of a soft-surface court
Speed: The slowest surface class in tennis: higher bounce, longer rallies
On the body: Softer underfoot, and you slide into shots instead of stopping hard

A clay court contains almost no clay

The famous red surface is crushed brick. At Roland Garros, home of the French Open, each court is built in five layers: stone at the bottom, about a foot of gravel for drainage, roughly three inches of clinker that holds moisture so the court does not crack, two and a half inches of crushed white limestone, and on top just a few millimeters of powdered red brick. That thin brick dusting is what slows the ball, colors everything terracotta, and coats your socks. What players actually slide on is the limestone underneath.

Keeping it playable is a daily craft. Clay courts are brushed to redistribute the top dressing, watered to stay firm, and rolled to stay flat. During the French Open, crews sweep and water the courts through the day and replenish tons of crushed brick over the fortnight.

Red clay vs green clay

Most American "clay" is not red at all. It is green: Har-Tru, made from billion-year-old metabasalt stone crushed in the Blue Ridge Mountains of Virginia. The surface was engineered in 1931 by an American contractor, Henry A. Robinson, whose initials gave the product its name, and it spread so widely that Har-Tru became almost a generic term for green clay. It is often called American clay for that reason.

The two play as cousins, not twins. Green clay is slightly firmer and faster than red, and it drains so quickly that courts are often playable again minutes after rain, one reason it thrives in Florida, where afternoon downpours are routine and where Har-Tru also stays markedly cooler than a hard court baking in the sun. Red clay is the slower, softer, more European experience.

Why players love it

Clay is the slowest surface class in tennis. The ball sits up higher and loses more speed off the bounce, so rallies run longer, winners are harder to hit, and points are won with patience and construction rather than one big serve. Movement changes too: instead of hard stops, you slide into the ball.

That sliding is also why clay has a reputation for being kind to the body. The surface gives underfoot, and USTA coaching material describes clay as acting like a cushion for your joints because there is no hard stopping. A systematic review in the ITF's coaching and sport science journal likewise found that injury rates differ meaningfully by surface. Many players who ache after hard-court sessions find they can play more tennis, more often, on clay.

It is a development surface, too. When the USTA built its National Campus in Orlando, it imported hundreds of tons of Italian red clay for six European-style courts, built specifically to prepare American players for the clay-court season in Europe.

Why public clay is so rare in the US

The same properties that make clay lovely make it expensive. A clay court needs brushing, watering, and rolling on an ongoing basis, plus periodic top dressing measured in tons per court, where a hard court mostly just needs to exist. Parks departments understandably default to asphalt. That is why clay is everywhere in continental Europe and Latin America and scarce in American public parks, and why the public facilities below are worth knowing about.

Where to play on red clay

Public red clay: Very few US facilities: NYC's Riverside Park, San Diego's Barnes Center, Sumter SC
NYC red clay: Ten public courts at 96th Street, $15 single-play day pass

96th Street red clay courts, New York

Ten outdoor red clay courts in Riverside Park, the only public outdoor red clay in New York City and, in the words of the park's own conservancy, one of the very few in the nation. A volunteer-driven nonprofit, the Riverside Clay Tennis Association, grooms them all season. You can play for a $15 single-play day pass or an NYC Parks season permit.

Ten public courts and a $15 day pass make Riverside Park the most important red clay in America.

Barnes Tennis Center, San Diego

The West Coast's public red clay story: two courts built from imported Italian red clay for the 2014 Davis Cup and renovated since, alongside a large hard-court complex. Barnes is a nonprofit public facility and effectively the only public clay in San Diego.

Palmetto Tennis Center, Sumter, South Carolina

The sleeper on this list: eight authentic German red clay courts owned by the city of Sumter and open to the public at modest hourly rates. If you are anywhere near the middle of South Carolina, this is the largest public red clay complex you will find in the region.

Sutton East Tennis Club, New York

Not a park, but worth knowing: eight indoor red clay courts under the 59th Street Bridge in Manhattan, bookable by the hour year-round with no membership required. When it is February and you need clay, this is where New Yorkers go.

Where to play on green clay

New York

The Central Park Tennis Center runs 26 Har-Tru courts below the 96th Street transverse, the city's biggest public tennis site. In Brooklyn, the Prospect Park Tennis Center has nine Har-Tru courts plus a seasonal bubble for winter play. Our guide to the best public courts in NYC covers both, permits and all.

Washington, DC

Rock Creek Tennis Center, run within a national park, keeps ten green clay courts alongside its hard courts, no membership needed. The same Har-Tru surface is used for the pro tournament held on site.

Atlanta

Bitsy Grant Tennis Center is one of the great American public clay clubs: thirteen soft-surface courts run by the city of Atlanta, with reservation fees that cost less than a sandwich.

New Orleans

Atkinson-Stern Tennis Center, a city facility dating to the 1920s, offers nine green clay courts at single-digit hourly rates, and City Park's tennis center keeps a further block of clay among its two dozen courts.

Florida

Florida is the closest thing the US has to a clay culture. The USTA National Campus in Orlando has more than thirty bookable Har-Tru courts, the St. Petersburg Tennis Center grooms twenty of them twice a day, and the Delray Beach Tennis Center, which hosts an ATP event, keeps fourteen. If you live in Florida, public clay is probably closer than you think.

First time on clay

Expect a slower, higher-bouncing ball and longer points. Patience wins on clay
Let yourself slide into wide balls instead of stopping hard. It feels wrong for about twenty minutes, then it feels like the whole point
The surface marks every bounce, so close line calls are settled by checking the mark
Sweep your court after play where brushes are provided. It is the house etiquette of every clay club in the world

Find clay, then find a partner

Clay rewards regular play more than any other surface, and a regular game needs two people. Browse courts near you to see who plays where, or find players at your level and make the slower, longer, easier-on-the-knees version of tennis a weekly habit.