The ATP String Report: What the Pros Use and What It Means for Your Game

Walk into any stringing room at a Masters 1000 event and you'll find a remarkably narrow field of choices. Despite hundreds of strings on the market, the ATP top 100 converges on a small set of polyesters — most of them stiff, low-powered, and strung at tensions that would surprise most club players. Understanding why is more useful than just knowing the names.

This guide draws on ATP setup data tracked in the RacketIndex Pro Setups Database to break down the most-used strings on tour, the tension philosophy behind each, and how those professional choices translate — or don't — to your own racket. If you're an intermediate-to-advanced player trying to make a more informed string decision, this is where to start.

Why Pro String Choices Actually Matter to Your Game

Professional players are not infallible equipment selectors — many are locked into sponsorship agreements that shape their setup — but the convergence of elite players around specific strings tells you something real. At the top level, equipment choice is ruthlessly functional. If a string doesn't perform under extreme spin loads, high swing speeds, and daily hitting volumes, it gets changed.

The strings that survive that selection process tend to share certain properties: predictable response, excellent tension maintenance at high string bed stiffness, and reliable bite on the ball. Those properties remain valuable at every level — they just express differently depending on your swing speed and style.

The risk for club players is blind imitation. A pro using ALU Power at 55 lbs in a 95 sq in, 12oz frame is working within a completely different mechanical system than an amateur using the same string at the same tension in a 100 sq in, 10.5oz frame. The string name is the same. The experience is not. Use pro setups as intelligence, not instruction.

DataATP Top 100 String Type Distribution

Based on setup data from the RacketIndex Pro Setups Database, here's how string types break down across the ATP top 100. Polyester's dominance is near-total — but the more interesting story is the growth of hybrid configurations, which now account for a significant minority of elite setups.

The ~6% using natural gut or multifilament as full-bed setups are almost exclusively older or serve-and-volley style players seeking maximum arm comfort. The gut/multi presence is much larger when you count hybrid setups — where it appears as the cross string alongside a polyester main.

The Most-Used Strings on the ATP Tour

The following strings represent the core of what you'll find in ATP rackets. Usage counts are drawn from RacketIndex's tracking of the top 100 — note that official stringing data isn't always publicly disclosed, so these figures reflect verified and reported setups.

#1Luxilon ALU Power

The most-used string on the ATP tour by a significant margin, ALU Power has been the benchmark polyester for over 15 years. Its aluminium-alloy composition gives it a distinctively firm, controlled response that suits players who generate their own power and need a predictable string bed above all else.

#2Babolat RPM Blast

Rafael Nadal's string, and for good reason. RPM Blast is a monofilament polyester with a pentagonal cross-section — the angular edges bite into the ball on contact, generating snapback and topspin that few round-profile strings can match. It's stiff, low-powered, and unforgiving of slow swing speeds.

#3Luxilon ALU Power Rough

The textured sibling of the standard ALU Power, Rough adds mechanical bite to the aluminium-composite formula. The surface texture creates additional friction at the point of contact, producing more spin with the same swing than the smooth version — at a minor cost to feel. Popular with players who want ALU Power's control signature but more topspin potential.

#4Yonex Poly Tour Pro

The most popular string in the Yonex ecosystem, Poly Tour Pro is a octagonal-profile polyester with a softer feel than either ALU Power or RPM Blast. It offers strong spin potential, excellent pocketing, and a comfort level that makes it one of the more arm-friendly polyesters at the pro level. Widely used by Yonex-contracted players and increasingly adopted outside the brand.

#5Head Hawk & Lynx Tour

Head's two leading polyesters represent different ends of the control-comfort dial. Hawk is the stiffer, more direct-feedback option — used by aggressive baseliners who want a crisp response and don't mind a demanding feel. Lynx Tour is softer and more comfortable, with a slight edge in spin potential and a reputation as a more forgiving poly for harder-hitting players who want to protect their arm over a long season.

#6Babolat VS Touch (Natural Gut — Hybrid Cross)

Natural gut's role on the ATP tour is almost entirely as the cross string in hybrid setups. Babolat VS Touch is the most prestigious and widely-used variant — a string made from natural sheep intestine fibres that delivers unmatched power, feel, and arm comfort. When combined with a polyester main, it creates a setup that keeps the spin and control benefits of poly while recovering the live feel and power-through-the-arm that full-poly beds sacrifice.

#7Luxilon 4G

A more textured, spin-focused evolution of the ALU Power formula. 4G uses a carbon-infused polyester construction that generates more friction than the standard smooth ALU Power, with a slightly softer feel at the same tension. Players making the switch from RPM Blast who want a more comfortable option often land on 4G as the middle ground between the two Luxilon flagships.

Pro Tensions vs. Amateur Tensions — Why There's a Gap

One of the most misunderstood aspects of pro setups is tension. Tour players string surprisingly tight by historical standards — typically 48–58 lbs for polyesters — and the question most club players ask is: should I do the same?

The answer is almost always no, and the physics are straightforward.

String bed stiffness is a function of both tension and swing speed. At very high swing speeds, a looser string bed becomes unpredictable — the ball sits on the strings too long, producing inconsistency. Tighter tension reduces dwell time and restores the precision a pro-level swing requires. But at recreational swing speeds, that same high tension simply reduces power and feel without the compensating control benefit.

Where the Top ATP Strings Sit on the Stiffness Spectrum

String stiffness (measured in RA or dynamic stiffness ratings) directly affects arm comfort and the overall feel of the string bed. Here's how the key ATP strings map to the broader stiffness landscape.

Frame–String Pairings: What the Tour Data Shows

String choice rarely exists in isolation from frame choice at the top level. The RacketIndex Pro Setups Database reveals consistent frame-string combinations that reflect a logical systems approach — stiffer frames are more often paired with softer poly or gut crosses, while flexible frames allow players to run stiffer strings without arm penalty.

For deeper analysis of individual pro setups — including exact tension data, string jobs, and frame specifications — explore the RacketIndex Pro Setups Database.

Translating Pro String Intelligence Into Your Own Setup

The goal isn't to replicate a pro setup — it's to understand the principles behind it and apply them to your own game. Here's a framework based on the ATP data above.

Know the Strings. Know the Setup. Know the Game.

ATP string trends converge on a narrow set of high-performance polyesters for good reason — but the intelligence embedded in those choices is more nuanced than the names suggest. Tension, stiffness, profile, and frame pairing all interact. The players who use these strings successfully have spent years dialling in a setup that works for their specific game. You don't need to copy their choices — you need to understand their reasoning.

RacketIndex exists to make that kind of equipment intelligence accessible. Whether you're narrowing down a string choice, trying to understand a pro's setup logic, or building a more informed picture of how your gear choices affect your game — the data is here.