Most people spend $200 on a racket and then let the shop string it with whatever’s cheapest. That’s like buying a sports car and running it on the wrong fuel. The strings are actually the most important part of the whole setup — and almost nobody treats them that way.
Quick Facts
| Quick Reference | Details |
| String categories | Natural gut, multifilament, synthetic gut, polyester, hybrid |
| Natural gut origin | First made by Pierre Babolat in 1875 — from cow intestine |
| Most popular choice | Nylon/synthetic gut (over half of all recreational players) |
| Pro tour dominant | Polyester — used by 80%+ of ATP and WTA players |
| Most arm-friendly | Natural gut > multifilament > synthetic gut > polyester |
| Gauge range | 15g (thickest) to 19g (thinnest) — counterintuitively, higher = thinner |
| Typical tension range | 50–60 lbs (manufacturer recommends stringing within their listed range) |
| Poly tension tip | String poly 10% lower than other types |
| Hybrid example | Roger Federer: Wilson Natural Gut mains + Luxilon ALU Power Rough crosses |
| Nadal’s setup | Babolat RPM Blast full bed — full poly, no compromise |
| Restring frequency rule | As many times per year as you play per week |
| Natural gut price | Premium — Babolat VS Touch runs 40–50+ per set |
The String Matters More Than the Racket. There, I Said It.
You can take the exact same racket frame and make it feel like two completely different weapons just by changing what’s inside it. Same head size. Same weight. Different string type, different tension — and it plays like a different instrument entirely.
And yet the conversation in tennis gear is almost always about rackets. What frame does Federer use? What specs does Djokovic play with? The string is the afterthought. The “just restring with whatever” moment at the front desk.
That’s backwards. Let’s fix it.
See also “British NBA Players: The Remarkable Story of a Football Nation Quietly Taking Over Basketball“
Start Here: What Do You Actually Need From Your Strings?
Before you buy anything, get honest about this. Because the answer changes everything.
Are you a recreational player who plays twice a week and doesn’t break strings? Are you an aggressive baseline grinder who snaps through a set in three weeks? Do you have tennis elbow or shoulder pain that shows up after a session? Are you trying to generate more topspin, or are you already producing too much pace and need more control?
Your answers sort you into a category immediately. And that category tells you which string family to start with.
Natural Gut: The Original, The Best, The One You Probably Can’t Justify
Pierre Babolat invented natural gut string in 1875. He used sheep intestine first, eventually settling on cow. That’s still what’s in those premium Babolat VS Touch sets today. Actual bovine gut. It sounds primitive. It plays like nothing else on earth.
Natural gut holds tension better than any other material. It’s the softest on the arm. It has the liveliest response at contact — that elastic snap when the ball hits the sweet spot. Players dealing with tennis elbow, shoulder problems, or general arm sensitivity who switch to natural gut often feel the difference within one session.
The downsides are real though. It’s expensive — $40 to $50+ per set. It doesn’t like moisture — humidity and wet conditions accelerate breakdown. And it will snap on you in ways that feel premature compared to polyester durability.
Most recreational players shouldn’t start here. But if you have arm problems and you’re playing with a stiff poly right now? Natural gut might actually fix something. That’s not marketing copy, that’s physiology.
Polyester: What the Pros Use and Why You Should Be Careful Copying Them
Roughly 80% of ATP and WTA players string with polyester. Nadal plays Babolat RPM Blast full bed. Iga Świątek uses Luxilon Alu Power. The whole tour runs on poly.
Here’s what people don’t tell you about that statistic: the pros restring before every single match. Sometimes between matches. A fresh poly feels completely different from a two-week-old poly, because polyester loses tension faster than other string types. When the tension drops, the control drops. The strings go dead. What was crisp becomes unpredictable.
You are not restringing before every match. So when you reach for poly because your favorite pro uses it, understand that you’re getting a fundamentally different experience — one where the string is already losing its key properties while you’re still in week two of the same job.
That said, poly does things other strings can’t. It gives you massive spin potential because the slicker surface allows strings to snap back into position after contact — this is called the “snapback effect” and it’s directly responsible for the kind of topspin modern professional tennis runs on. It gives you serious control if you swing aggressively. For an intermediate to advanced player with a fast, spin-heavy game who strings often? Poly makes complete sense.
Just drop the tension 10% lower than you would with other strings. String poly at 55 lbs when you’d normally use 60. This compensates for stiffness and saves your arm.
Multifilament: The Grown-Up Middle Ground
Multifilament strings get made by weaving together thousands of individual nylon filaments into one string. The construction creates something that mimics natural gut’s softness and feel without the price or the weather sensitivity.
This is the category that’s genuinely underrated. Multifilament strings work for a wider range of players than almost any other type. They’re arm-friendly — genuinely, not just as a marketing claim. They produce decent power. They hold tension better than synthetic gut. And they cost significantly less than natural gut.
The HEAD Velocity MLT is a go-to recommendation in this category for recreational and club players. If you have tennis elbow and can’t afford natural gut, a quality multifilament is your next best option.
The knock on multifilament is that it can feel “mushy” to players who prefer a crisper response. And if you’re a string breaker, multifilament won’t last you the way poly would. But for the majority of recreational players who aren’t snapping strings regularly? It’s the sweet spot.
Synthetic Gut: The Entry Point
Synthetic gut is a monofilament core with a multifilament wrap around it. It’s the cheapest option. It’s also perfectly fine for beginners and junior players who break strings so frequently that putting premium material in their racket is just burning money.
Over half of all recreational tennis players use nylon/synthetic gut strings. There’s a reason for that. They’re affordable, reasonably comfortable, and give you a passable experience across power, control, and feel. They’re not the best at any single thing, but they don’t fail you badly anywhere either.
If you just picked up tennis and you’re not sure whether you’ll keep playing, start here. You can always upgrade once you figure out what you actually want your strings to do.
Gauge: The Spec Nobody Explains Properly
Here’s the thing about gauge that trips literally everyone up the first time: higher gauge number means thinner string. Not thicker. Thinner.
So a 15-gauge string at 1.35–1.40 mm is thick. A 17-gauge string at 1.20–1.25 mm is thin. Higher number, thinner string. The US gauge system is counterintuitive and it has confused players for decades.
Why does it matter? Thinner strings bite into the ball better, generate more spin, and tend to feel more responsive. Thicker strings last longer and give you more durability. That’s the tradeoff.
If you’re playing with polyester and generating serious spin, a 17-gauge gives you more bite. If you keep snapping strings and want something that lasts, go 15 or 16. If you’re on natural gut or multifilament and want a balance of feel and longevity, 16 or 16L (which means 16 Light, slightly thinner than standard 16) is the reliable middle.
The “L” designation you’ll see — 16L, 17L — means “Light,” just a notch thinner than the standard for that gauge. It matters. Don’t ignore it.
Tension: The Most Personal Decision You’ll Make
Your racket has a recommended tension range printed on the frame — usually somewhere around 50–60 lbs. That’s where you start.
The general principle is this: higher tension gives you more control, lower tension gives you more power. This is counterintuitive to some people. But physics explains it — a tighter string bed deflects less when the ball hits it, keeping contact brief and directional. A looser string bed creates a trampoline effect, launching the ball with more power.
If you’re a beginner who generates limited pace, you want lower tension. The string does more work. If you’re an advanced player who swings fast and wants to control a ball that would otherwise fly long, higher tension tightens the response.
Start in the middle of your racket’s recommended range. Hit with it. Then adjust one or two pounds at a time in the direction that feels right. You’ll feel the difference before you’ve gone five pounds either way.
One hard rule: if you’re using polyester, string 10% lower than you’d use for other materials. A poly strung at the same tension as gut or nylon is punishing on the arm and will go dead faster than you want.
Hybrid Setups: The Smartest Thing Most Amateurs Never Try
A hybrid means two different strings in the same racket — one material for the mains (the vertical strings), a different material for the crosses (horizontal). The mains have more influence on how the string bed feels overall. The crosses have less — but they still matter.
Roger Federer’s famous setup: Wilson Natural Gut in the mains, Luxilon ALU Power Rough in the crosses. The natural gut gives you that elastic, arm-friendly, high-feel response at contact. The poly cross adds control and spin without making the whole bed stiff. The result is a string setup that does things neither string could do alone.
Federer’s isn’t the only configuration. Some players flip it — poly in the mains, gut in the crosses. Tommy Paul and Alexander Zverev have played this way. The poly mains give you spin and control. The gut crosses add softness and reduce arm stress compared to a full poly bed.
For recreational players, the most practical hybrid play is often: multifilament in the mains, a softer poly in the crosses. You get more feel and comfort than a full poly bed, more control and durability than a full multifilament setup, and a price point that doesn’t require natural gut’s premium cost.
Hybrid stringing does add complexity — if one string breaks, you’re replacing just one type. And experimenting to find your ideal combo takes time. But once you land on it, the feeling is genuinely different from anything a full bed achieves.
When to Restring: The Rule Everyone Ignores
Here’s the standard industry guidance, and it’s actually a decent rule of thumb: restring as many times per year as you play per week. Play three times a week, restring three times a year. Play five times a week, restring five times a year.
Most recreational players restring when the strings break or when they notice visible fraying. By that point, the strings have been dead for months. The tension has dropped. The elasticity is gone. You’re essentially hitting with a completely different string than what you paid for.
This matters more with polyester than any other material. Poly loses tension faster than gut or multifilament. The window where poly strings are actually performing as designed is shorter than you think. If you’re on a full poly bed and playing three times a week, you should be restringing every four to six weeks. That’s not extreme. That’s the honest math.
Natural gut on the other hand actually holds tension exceptionally well. You’ll get longer performance windows from it, which partially offsets the higher per-set cost when you do the math across a year of stringing.
The Decision Framework: Who Should Use What
Beginner, plays once or twice a week, doesn’t break strings: Synthetic gut, 16 gauge, mid-range tension. Done. Don’t overthink it.
Recreational intermediate player, wants better feel, no arm issues: Multifilament, 16 or 17 gauge. HEAD Velocity MLT or similar is a reliable starting point.
Aggressive intermediate-to-advanced player, wants spin and control, strings often: Polyester, 17 or 16L gauge, tensioned 10% below gut/nylon equivalent. Solinco Hyper-G, Luxilon ALU Power, Babolat RPM Blast are the proven choices.
Any player with tennis elbow or chronic arm sensitivity: Natural gut first choice, quality multifilament second. Avoid polyester full beds entirely.
Advanced player wanting to explore: Hybrid setup — natural gut mains with poly crosses is the classic entry point. Expect to experiment before you find your ideal configuration.
Final Words
The strings are what actually touch the ball. Everything else — the racket, the grip, the weight — creates the environment. The strings are the direct contact point. Choosing them thoughtfully isn’t gear geekery. It’s just paying attention to the thing that matters most.
You don’t need to go spend $50 on natural gut right now. Start with the right category for your actual game, string at a reasonable tension within your frame’s recommended range, and commit to actually restringing on a real schedule. Those three things alone will change how your racket plays more than any frame upgrade.
And if your arm hurts every time you play? Put down the poly. That’s not toughness. That’s a string choice causing you pain, and it’s completely fixable.
FAQs
1. What tennis strings should a beginner use?
Synthetic gut or a basic multifilament. They’re affordable, arm-friendly, and give you a reliable performance baseline while you develop your game. Don’t spend premium money on poly or gut until you know what you want your strings to do.
2. What’s the difference between polyester and multifilament strings?
Polyester is a stiff monofilament that gives you spin, control, and durability at the cost of comfort. Multifilament is made of woven nylon fibers that mimic natural gut’s softer, more elastic feel. Poly suits aggressive advanced players; multifilament suits recreational players and anyone with arm sensitivity.
3. What tension should I string my tennis racket at?
Start at the middle of your racket’s recommended range (usually printed on the frame). If you feel you’re losing control, go up a pound or two. If the racket feels harsh or lacks power, go down. If using polyester, string 10% lower than you would with other materials.
4. What gauge string should I use?
Higher gauge = thinner string. 15g is thick and durable, 17g or 17L is thin and feels crisper with better spin potential but breaks faster. For most recreational players, 16 or 16L is the balanced starting point.
5. What strings does Roger Federer use?
Federer’s famous setup was Wilson Natural Gut in the mains and Luxilon ALU Power Rough in the crosses — a hybrid that combined gut’s feel and elasticity with poly’s control and spin.
6. What strings does Rafael Nadal use?
Babolat RPM Blast 16L, full bed polyester, tensioned at approximately 55 lbs in the mains and 57 lbs in the crosses. No hybrid — full poly, optimized for his aggressive topspin game.
7. Is natural gut worth the price?
For players with arm problems: yes, absolutely. For recreational players without arm issues who don’t restring often: probably not — the cost doesn’t justify the marginal performance gain. For competitive players who want the best possible feel and arm comfort: it earns its price, especially in a hybrid setup.
8. What is a hybrid string setup?
Using two different strings in the same racket — one in the mains (vertical strings) and a different one in the crosses (horizontal). The mains dominate the overall feel. Classic hybrid: natural gut mains with polyester crosses. This lets you combine the best properties of two string types.
9. How often should I restring my tennis racket?
The standard rule: as many times per year as you play per week. Twice weekly = restring twice per year minimum. If you use polyester, restring more often — it loses tension faster and goes dead before it visibly breaks.
10. Does string color matter?
No. Color is cosmetic. The only exception is if a specific color variant of a string has a different texture treatment (some poly strings come in textured versions for extra spin bite), but the color itself changes nothing about performance.
11. Can cheap strings cause tennis elbow?
Stiff strings can absolutely contribute to arm discomfort. Polyester is the main culprit — its low elasticity transfers more shock into your arm at impact. If you have tennis elbow, switching to natural gut or a quality multifilament and dropping your tension a few pounds makes a real, measurable difference.
12. What’s the most popular tennis string on the pro tour?
Polyester dominates — used by over 80% of ATP and WTA players. Luxilon ALU Power and Babolat RPM Blast are probably the two most widely used. However, many pros use hybrid setups that include natural gut, particularly in the crosses.
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