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Tennis Lab FX

String education from the shop floor.

The questions we answer every day at Tennis Lab FX — written down so you can read them before you come in, or instead of coming in.

STRING

Pick what you need to know.

Everything from choosing a string type to understanding why your elbow hurts — no experience required. Each article takes 5–8 minutes to read.

String Selection 01
Polyester vs. Natural Gut
What actually separates the two most talked-about string materials — and how to figure out which one belongs in your racquet.
Read — 7 min →
Arm Health 02
Best Strings for Tennis Elbow
Tennis elbow is often a string problem. Here's which materials reduce shock, which amplify it, and how to build a setup that actually helps.
Read — 8 min →
String Setup 03
What Is a Hybrid String Setup?
How gut mains and poly crosses work, why most tour players use this configuration, and whether it makes sense for your game.
Read — 6 min →
String Setup 04
How to Choose String Tension
What the tension range on your frame means, how lower and higher lbs actually change performance, and the polyester exception every player should know.
Read — 7 min →
Racquet Equipment 05
How Swingweight Affects Your Game
Swingweight is more impactful than static weight or balance. Here's what the numbers mean, how different ranges feel on court, and when to adjust.
Read — 6 min →
String Selection 06
String Gauge: Does It Matter?
The complete gauge system explained — how diameter affects spin, feel, durability, and arm comfort, and which gauge to choose for your string type.
Read — 5 min →
String Maintenance 07
How Long Do Tennis Strings Last?
Dead strings cause more problems than broken ones — and most players are playing on dead strings. Here's how to know when it's time to restring.
Read — 5 min →
Racquet Equipment 08
Racquet Balance, Calibrated
Where the mass sits in your racquet — head-light, head-heavy, or even — changes how the frame feels in hand and through the stroke. Here's what the spec means and when to recalibrate.
Read — 7 min →

Come talk to us in person.

The articles cover the fundamentals, but every player's situation is different. If you want a setup dialed to your game — your frame, your tension, your arm — walk in or book a consultation and we'll take it from there.

Poly vs. Natural GutHybrid SetupsTension · Gauge · Arm HealthString MaintenanceSwingweight & Your GameBuilt from the Shop Floor7 Articles · No FluffTennis Lab FX · New York