How to Choose a String for Your Tennis Racquet

A few decades ago, the only option available for stringing tennis racquets was natural gut, a material made from fibers found in the intestines of cattle or sheep.

At that time, tennis was played at a slower pace and with mostly flat strokes, so natural gut was durable enough for the style of play. However, as tennis evolved toward greater speed and a wider variety of spin, string materials also had to change, offering greater durability and versatility.

Today, natural gut is still available and is used by some professional players who have the resources to restring their racquets frequently with this relatively short-lasting material. However, the number of string options has increased exponentially. On Tennis Warehouse alone, players can find more than 30 string brands, each offering a wide variety of products.

The diversity of strings available today can be confusing for players. As a result, they sometimes make mistakes, such as stringing their racquet with a material that does not suit their game or spending a significant amount of money on a reel that may not be the best option for them.

Below, I define some key terms that players should understand when choosing strings, because not all strings are created equal, and not every string benefits every player in the same way.

Nylon

Nylon is the material used in some of the most affordable tennis strings, and its main advantage is its price. However, its useful life can be relatively short because the strings tend to lose tension, show wear, and develop a rough texture over time.

Polyester

Polyester is an affordable material that is generally more durable than nylon. However, it has two major disadvantages: it can lose its original tension relatively quickly, and it is usually quite stiff. Because of this stiffness, prolonged use may contribute to discomfort or injuries in the elbow.

For this reason, many players use hybrid string setups, which typically consist of polyester in the main strings and nylon or synthetic gut in the cross strings.

Synthetic Gut

Synthetic gut strings are designed to reproduce some of the feel and comfort of natural gut. They can be monofilaments, made from a single fiber, or multifilaments, composed of several very thin fibers bonded together.

One of the most important characteristics of this type of string is its softness. For this reason, synthetic gut and multifilament strings are often combined with stiffer strings, such as polyester or other copolymers.

In terms of price, the synthetic gut family includes options for almost every budget, ranging from basic nylon-based monofilaments with additional materials to premium multifilaments that can cost more than $300 per reel.

The main disadvantage of synthetic gut and multifilament strings is durability, as they may break relatively quickly. However, they can be ideal for older adults, recreational players, or anyone looking for a more arm-friendly setup.

Copolymers

Copolymers represent a newer generation of tennis strings. They are primarily polyester-based strings treated or combined with additional materials to provide specific performance characteristics. In some cases, manufacturers incorporate substances such as paraffin or aluminum fibers.

Special manufacturing processes can also create strings with different shapes and surfaces, including pentagonal, round, twisted, textured, or coated designs.

Within the copolymer category, strings are designed to enhance particular aspects of a player's game, such as power, spin, control, or durability. The advantage of choosing a copolymer is that players have many options and can select a string that closely matches their needs and playing style.

The current trend among copolymer manufacturers is to develop strings that combine durability and comfort while maintaining tension for as long as possible.

Prices for these strings vary considerably. Generally, strings offering more specialized performance features tend to be more expensive.

Stringing Recommendations

• Make sure your string matches your needs. There is little reason to choose a string primarily for durability if you are a weekend player who rarely breaks strings. In that case, you may benefit more from a string that provides better feel and comfort, even if it is less durable.

• Know exactly what you are using. Keep track of the brand, gauge, and name of your string. This information will make it easier to request the same setup if you travel for a tournament or need to use a different stringer.

• Don't choose a string based on price alone. Although price can sometimes reflect the quality or technology of a string, the most expensive option is not necessarily the best one for your game.

• Consider buying a reel if you frequently break strings. If you are a frequent string breaker, purchasing your own reel can be more economical. However, make sure the string works well for you before making the investment. Otherwise, you could end up with enough string for approximately 19 string jobs that you don't want to use.