Best Tennis Strings for Junior Players
Why Strings Matter More Than You Think
Parents invest significant money and research into rackets, but strings are where the rubber meets the road — or more accurately, where the ball meets the frame. Strings directly control power, spin, feel, and comfort. For junior players who are still developing technique and arm strength, the right string setup can genuinely improve performance and reduce injury risk.
This guide covers the string types available, how to choose the right one for your child’s level and playing style, and practical advice on tension and restringing frequency.
String Types Explained
Synthetic Gut
Synthetic gut is the default choice for most junior players, and for good reason. It offers a balanced combination of power, comfort, and durability at an affordable price point. Brands like Prince Synthetic Gut and Head Synthetic Gut are tournament staples in the junior ranks.
For players under 12 or anyone playing at a recreational to intermediate level, synthetic gut is the right starting point. It is forgiving on off-center hits, easy on the arm, and performs consistently until it breaks.
Multifilament
Multifilament strings are constructed from hundreds of tiny fibers woven together, creating a softer, more arm-friendly string with excellent feel. They are a step up from synthetic gut in comfort and touch, making them a strong choice for junior players with arm sensitivity or those developing a more finesse-oriented game.
The tradeoff is durability. Multifilaments break faster than synthetic gut, especially for players who hit with heavy topspin. For a junior playing three to four times per week, expect to restring every four to six weeks with multifilament.
Polyester (Poly)
Polyester strings are the choice of most professional players and advanced juniors. They provide exceptional spin potential and control, allowing players to swing aggressively and still keep the ball in the court. Brands like Luxilon ALU Power and Babolat RPM Blast dominate at the top of the junior game.
However, poly comes with important caveats for juniors. These strings are stiff and transmit more shock to the arm. Most coaching and sports medicine professionals recommend that junior players under 14 avoid full beds of polyester string unless they have a physically mature arm and an advanced swing. The risk of arm injuries, particularly in the elbow and wrist, is real.
Hybrid Setups
A hybrid setup uses one type of string in the mains (vertical strings) and another in the crosses (horizontal strings). The most common hybrid for juniors is poly mains with synthetic gut or multifilament crosses. This provides some of the spin and control benefits of polyester while reducing stiffness and improving comfort.
Hybrids are an excellent bridge for competitive juniors aged 13-16 who want more spin but are not yet ready for a full poly setup.
Choosing the Right String by Player Level
Beginner to Intermediate (ages 8-12): Synthetic gut at mid-range tension. Focus on comfort and power. Do not use polyester at this stage. The priority is developing proper technique without arm stress.
Intermediate to Advanced (ages 12-15): Consider multifilament for comfort-oriented players or a hybrid setup for players developing topspin-heavy games. Full poly is appropriate only for physically mature players with clean technique and a coach’s recommendation.
Advanced Tournament Players (ages 15-18): Full poly or hybrid setups based on playing style. Players at this level typically have strong enough arms and developed enough technique to benefit from polyester’s control and spin advantages.
String Tension Guidelines
Every racket has a recommended tension range printed on the frame. For junior players, stringing at the lower to middle end of that range is almost always the right call. Lower tensions provide more power (reducing the effort a junior needs to generate pace), more comfort, and a larger sweet spot.
A common mistake is stringing too tight. High tension gives more control but demands more from the player’s arm and technique. Junior players rarely benefit from the incremental control that high tension provides, and the comfort cost is not worth it.
A practical starting point: take the midpoint of the racket’s recommended range and subtract two to three pounds. Adjust from there based on how the player feels after hitting.
How Often to Restring
The standard rule of thumb is to restring as many times per year as you play per week. A junior who plays four times per week should restring approximately four times per year. For tournament players, add one to two additional restrings around major tournament periods.
Even if a string has not broken, it loses tension and performance over time. Dead strings — strings that have lost their elasticity — rob a player of power and spin. If your child complains that their racket feels “flat” or “boardy,” it is probably time for a fresh set of strings regardless of when the last restring occurred.
Budget Considerations
Stringing costs add up over a competitive season. A typical restring at a local pro shop runs $15-$30 for labor plus $5-$20 for the string itself, depending on the type. Buying string in reels (200 meters) rather than individual sets saves 30-40% over the course of a year.
Many competitive tennis families invest in a home stringing machine once their child reaches the tournament level. Entry-level drop-weight machines run $200-$400 and pay for themselves within a season if the player restrings frequently. It also means fresh strings are available on demand — a significant advantage during tournament weekends.
