For most intermediate players who hit with topspin, a good starting string tension is in the middle of the range printed on the racquet frame, and then adjusted by a few pounds based on what the ball is doing. If your shots are sailing long or you feel no control, go down in small steps. If the ball sprays or you feel the racquet is too lively on full swings, go up by two or three pounds. Tension is a tuning tool, not a magic number. In my coaching sessions I treat it as one variable that I change slowly and on its own.
This guide explains what tension actually changes, how to pick a starting point for a spin-based game, and a simple test routine you can run on court without needing any special equipment.
What string tension actually does
Tension affects three things you can feel: power, control and comfort. Lower tension makes the string bed more elastic, so the ball leaves the strings with more help from the racquet. Higher tension makes the bed stiffer, which usually gives you a more predictable, lower-launch response when you swing hard. Comfort follows the same pattern: a very tight stringbed transmits more shock to the arm, a looser one feels softer.
Two common beliefs deserve a correction. First, tighter strings do not automatically mean more spin. Spin comes mainly from your swing path, racquet-head speed and how the string bed grips and releases the ball. Second, lower tension does not automatically mean more power for everyone. A player with a short, slow swing may gain depth from a looser bed. A player with a fast swing may find the ball launches too high and lands long.
Why the frame’s printed range matters
Every racquet has a recommended tension range printed near the throat or listed by the manufacturer. Stay inside it unless you have a reason and know your stringer. It reflects what the frame was designed to handle, and it is the best neutral place to begin.
How tension interacts with a spin game
A topspin player brushes up the back of the ball, and the strings need to move and snap back to help the ball dip. Open string patterns, which have fewer crossing strings and more space between them, let the strings move more and grip the ball. That is why many spin-oriented racquets come with open patterns. Tension then decides how that movement feels.
If you swing fast and use a lot of spin, a slightly lower tension can give extra net clearance and depth while the spin brings the ball back down. If you swing at moderate speed and the ball is landing short, the issue may be technique or contact point rather than the strings, so check that before you change anything. My forehand diagnostic checklist shows the order in which I look at the stroke, and equipment is near the end of that list for a reason.
A practical starting point for intermediate players
I do not give a single number, because it depends on the frame, string type, head size and your swing. What I do is follow these steps:
Step 1: Start at the midpoint of the frame’s range
If the range is, for example, 50 to 60 pounds, start near 55 and look at the string type next. Polyester and similar stiff strings are normally strung a little lower than natural gut or multifilament because they are harder and less forgiving to the arm.
Step 2: Hit with the same string set for at least a few sessions
New strings feel lively and then settle. Judge a set only after it has had some hitting time, not after ten minutes.
Step 3: Read what the ball is telling you
- Balls sailing long on full swings: the bed may be too lively for your swing speed. Try two to three pounds tighter.
- Balls landing short, no depth, or a flat and dead feeling: try two to three pounds looser, after checking your contact point and your preparation.
- Arm or elbow discomfort: try a looser tension and a softer string. If pain continues, see a doctor or physiotherapist, because I am a coach and not a medical professional.
- Frequent string breakage: tension is not the main cause. Look at string type and gauge, and how much of the ball you hit near the frame.
Step 4: Change one thing at a time
I have tested different string and tension combinations on my own frames, and the lesson is always the same: if you change the string, the tension and the grip in one go, you cannot tell what helped. Change a single variable, hit for a week, then decide.
Hybrid set-ups
A hybrid uses two different strings: one in the mains (the vertical strings) and another in the crosses (the horizontal strings). A common idea is a stiffer polyester in the mains for spin and durability, and a softer string in the crosses for comfort. It can work well, but it adds two more variables, so I suggest intermediate players get comfortable with a full set first. When you do try a hybrid, make the tension the same in both for the first test and only separate them later.
Singapore conditions and string choice
Heat and humidity affect how your strings feel and how long they hold tension. Strings lose tension over time even if you never play, and in a warm climate a set can feel dead sooner than the same set might in a cooler place. Balls also play heavier when humid, which changes how much help you want from the bed. I covered the conditions and what to do about grip in my guide to playing tennis in Singapore’s heat and humidity.
A practical rule is to restring on how it feels, not on a calendar. If the ball no longer comes off the strings the way it did, or control has dropped without any change in your technique, the set is probably finished. Players who hit often may need to restring more frequently than weekend players.
A simple on-court test routine
You do not need a lab. Run these three checks with fresh balls before and after any change:
Test 1: Depth and height check
Hit twenty crosscourt forehands at a comfortable pace, then twenty at a faster pace. Note how many land beyond the baseline and how high they clear the net. If most are long at pace, the bed is too lively for you.
Test 2: Targeted serve check
Hit ten first serves and ten second serves to a target in the box. Second serves show the string’s spin response well. If you struggle to bring the ball down into the box, a small tension change may help, but check your serve motion too; my guide to serve pronation covers the technique side.
Test 3: Comfort check
After a full session, notice your forearm and elbow. Mild tiredness is normal. Soreness that builds over days is a cue to try a looser tension or softer string.
Write the results down. Over a few weeks you will build a record of what suits your game. If you are also stuck at a level, remember that equipment is rarely the main reason; my plateau guide goes through what I check first.
Common questions about string tension
What tension should an intermediate player use?
Start at the midpoint of the frame’s recommended range and adjust two to three pounds at a time based on depth, control and arm comfort.
Does lower tension give more spin?
Not by itself. Spin mostly comes from your swing path and racquet-head speed. Lower tension can add launch and net clearance, which makes it easier to swing up with spin, but it does not create spin on its own.
Is higher tension better for control?
Often it feels more controlled for players with fast swings, because the ball launches lower. For players with slower swings it can feel stiff and short. It depends on the player.
How often should I restring?
When control or feel drops without a change in your technique. Frequent players usually need to restring more often than occasional players.
Written by Tan Xu Teng (Coach XT), Head Tennis Coach and founder of TAG International Tennis Academy. Coach XT specializes in technical diagnostics, competitive player development, and modern coaching methodology in Singapore.