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The Complete Guide on How to Select the Optimal Tennis String



Selecting the best tennis strings for your tennis game is an important and challenging decision. To aid the decision making process we prepared this complete guide, which contains everything you ever wanted to know (but were afraid to ask) about tennis string.


This guide walks you through the pros and cons of the various string types, as well as their textures, compositions and gauges.

"The racquet is the body; the string is the soul." - Anonymous

In selecting a string, consider first what is most important for you: feel, dampening and comfort, spin potential, dealing with tennis elbow issues, durability / frequent breaking of string?


Having selected your string, you can then adjust to have more or less power /control, or compensate for tension loss after the break-in period, by the choice of tension at which the racquet is strung.


While reading the content below, we suggest you take notes to help you choose a specific type of string.



String Types


Tennis strings can be divided into three primary types: synthetic gut, polyester and natural gut. A summary table is presented below and is followed by further details.


Synthetic Gut (Syn-Gut)

  • Made of nylon

  • Most commonly used string

  • Recommended also for the beginner and the infrequent player


Pros

  • Available as mono-filament or multi-filament (see more discussion below)

  • Medium stiffness: more stiff than natural gut, but less stiff than polyester

  • Good quality, performance and durability at a budget price

  • Not sensitive to humidity

  • Wide assortment of colours


Cons

  • Not as comfortable or soft as natural gut

  • Not as spin friendly as polyester


MONO-Filament vs MULTI-Filament


Syn-gut comes in two versions: mono-filament and multi-filament. Since the multi-filament has a tendency to fray as it wears, current high quality versions come with a special coating to improve durability. This makes the quality and performance of the two constructions even more similar than before; hence, we recommend the slightly less expensive mono-filament.


Polyester

  • Made of Polyester

  • More popular for advanced players

  • Mono-filament


Pros

  • Excellent for spin

  • Excellent for control

  • Superior durability for frequent string breakers


Cons

  • Will undergo a loss of tension during the initial break-in period before stabilizing

  • Low power: typically strung at a lower tension to regain some power

  • Low comfort due to increased stiffness



Natural Gut

  • Made from cow intestines

  • The Gold Standard that other strings are compared to

  • Multi-filament: will fray just like syn-gut multi-filament

  • Most power: typically strung at higher tensions for control


Pros

  • Treated well will last as long as synthetic materials in the same gauge

  • Most comfortable / least stiff

  • Better damping of shock and vibration

  • Offers the best tension retention


Cons

  • Most Expensive ($$$$): 2x to 3x more expensive than high quality synthetics

  • Will be damaged by humidity: climate and/or damp courts

  • Limited shelf life: keep out of direct sunlight and avoid extremes of hot and cold temperatures



String Texture


  • Multi-filament string will have a natural texture due to its twisted composition

  • Some textured strings are manufactured with a rough surface or with a non-round shape - such as hexagonal

  • The rough surface will increase spin potential by “biting” the ball better during impact

  • Textured string will wear faster than smooth string requiring more frequent restringing



Is Hybrid Stringing Right for You?


If you have ever played with a natural gut string before, you'll likely have found it to be the most playable and arm-friendly string going. However, it's expensive and if you're a heavy topspin player, the durability of the strings comes into question.

On the flip side, polyester provides much better durability, while offering unrivalled levels of spin and control. But the strings can be unforgiving on the arm and will aggravate tennis elbow issues.


If only there was a way to combine the best qualities of different types of strings whilst lessening each of their limitations in the same racquet. Welcome to the world of hybrid tennis stringing!


  • For durability (particularly heavy hitters) - use polyester in the mains / gut in the crosses. The main strings work the most, hence why they tend to break first.

  • For better feel – use natural gut in the mains / polyester in the crosses


As an alternative and less expensive solution to mixing materials: experiment using a thicker gauge of your favourite strings in the mains and a thinner gauge in the crosses!


For more information about the pros and cons of hybrid strings, check out the Tennis Warehouse and /or Perfect Tennis websites.



Gauge / Thickness


  • Definition: the number of string strands that can be placed side by side in an inch. For example: 16 gauge (standard) – 16 strands per inch; 18 gauge (thin) – 18 strands per inch

  • Thickness may also measured in mm. For example 16 gauge = 1.25 mm


Remember: strings are supposed to break. If you never break a string – try a thinner gauge

Recommendation: use the thinnest gauge of your favourite string that does not break too easily


Thicker

  • More durable

  • Stiffer: less stretch during impact

  • Better tension maintenance


Thinner

  • A bit more spin potential / ball “bite”

  • Slightly more feel

  • Slightly softer, more comfortable: stretches a bit more during impact



Conclusion


After making an informed choice of string, you are encouraged to experiment with different string and tension combinations. To help with this next step, check out our article How to Select the Tension of Your Tennis Racquet Setup.


We will gladly work with you to track your racquet tension loss and provide you with historical feedback to help you tweak your next stringing.


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