Junior Tennis Player Diet: What and When to Eat and Drink Before, During and After a Match

This article gives general educational information, not an individual diet or supplement prescription. Food choices and amounts depend on age, growth, activity, tolerance and health. Adapt examples for allergies, medical conditions and dietary needs with an appropriate professional. The nutrient figures below are United States dietary reference intakes, not extra sports doses. TTP has not obtained independent clinical review of this article.

On normal training and tournament days, nutrition should be balanced. The player needs carbohydrates, protein, healthy fats, vegetables, fruit and enough fluid. Carbohydrates are especially important in tennis because they give quick energy for starts, strokes, long rallies and repeated accelerations. Practical tennis nutrition guidance notes that tennis players need to maintain glycogen stores through enough carbohydrate intake, while protein is needed for recovery after exercise.

Good carbohydrate sources: rice, pasta, buckwheat, potatoes, oatmeal, bread, bananas, fruit and dried fruit.

Protein sources: eggs, chicken, fish, meat, cottage cheese, yogurt, cheese and legumes.

Healthy fats: nuts, avocado, olive oil and fish.

Vegetables and fruit are not there just to make the plate look healthy. They support digestion, vitamins and general health.

Another extreme is dangerous for a young athlete: playing almost without food "to feel lighter". In reality, this often leads to weakness, irritability, loss of concentration and poor recovery.

Vitamins and minerals: what matters for a junior tennis player

Vitamins and minerals do not give quick energy in the same way carbohydrates do, but without them the body recovers worse, tolerates workload worse and may tire faster. Calcium, vitamin D, iron, magnesium, sodium and potassium are especially important for a junior tennis player. For teenagers who train actively, attention to calcium, vitamin D and iron is especially important because of growth, bone load and the risk of deficiency.

Calcium and vitamin D

The reference amounts describe total daily intake from food, drinks and any supplements together. They are not instructions to give a child that amount in tablets. National guidance and individual medical advice may differ; use the linked NIH fact sheets to understand the figures and their limits.

Calcium is needed for strong bones and teeth, normal muscle work and the nervous system. In tennis this matters because of constant starts, stops, jumps, slides and sharp changes of direction. For children aged 9-13 and teenagers aged 14-18, a reference calcium intake is about 1300 mg per day. Good calcium sources include milk, yogurt, cheese, cottage cheese, kefir, fortified plant drinks, broccoli, cabbage, sardines or salmon with bones.

NIH: calcium reference intakes and food sources

Vitamin D helps the body absorb calcium. It is also important for muscles, the nervous system and general health. For children and teenagers from 1 to 18 years old, the usual reference is 15 mcg, or 600 IU, per day. Sources of vitamin D include fatty fish, eggs, some dairy products and foods specially fortified with vitamin D. Sunlight also helps the body produce vitamin D, but relying only on sun is not always correct, especially in winter or when the child is rarely outdoors.

NIH: vitamin D reference intakes and safety

Iron

Iron is needed to transport oxygen in the body. If iron is low, the player may tire faster, tolerate long training sessions worse and lose concentration. For teenagers aged 14-18, the iron reference is about 11 mg per day for boys and 15 mg per day for girls. For teenage girls, iron is especially important because of menstruation and growth.

NIH: iron reference intakes and supplement safety

Good iron sources include beef, chicken, turkey, fish, eggs, liver, lentils, beans, chickpeas, buckwheat, spinach, nuts, raisins, fortified cereals and bread. Iron from plant foods is absorbed better when it is eaten with vitamin C foods: orange, berries, kiwi, sweet pepper, tomatoes and broccoli.

Magnesium

Magnesium is involved in muscle and nervous system work, helps the body use energy normally, and supports bones and recovery. For teenagers aged 14-18, a reference intake is about 410 mg per day for boys and 360 mg per day for girls. Sources of magnesium include nuts, seeds, oatmeal, buckwheat, wholegrain bread, beans, lentils, spinach, bananas and yogurt.

NIH: magnesium reference intakes and safety

It is important not to think of magnesium as a magic solution for all cramps. Cramps can be connected with fatigue, heat, fluid loss, low sodium, overload or poor recovery. So it is better to look at nutrition and drinking overall, instead of looking for one tablet.

Sodium and potassium

Sodium and potassium help the body function normally. Regular meals contribute these minerals; prolonged heavy sweating may require a more individual replacement plan. Sports drinks are not the same as stimulant energy drinks and are not a routine replacement for water in everyday life.

Foods such as potatoes, beans, fruit and yogurt contribute potassium; ordinary meals also supply sodium. Do not add salt indiscriminately or use a drink to keep a child playing through illness. Ask for medical help if the player feels unwell rather than guessing which mineral is missing.

B vitamins, vitamin C and antioxidants

B vitamins are important for energy metabolism. They do not make the player "faster" by themselves, but they help the body use carbohydrates, protein and fats normally. Sources include grains, wholegrain bread, meat, fish, eggs, dairy products and legumes.

Vitamin C is needed for the immune system, connective tissue and recovery. Sources include citrus fruit, kiwi, berries, sweet pepper, broccoli and tomatoes. Vitamins A and E, and other antioxidants, are better obtained from normal food: vegetables, fruit, berries, greens, nuts and vegetable oils.

Does a junior tennis player need vitamin supplements?

Do not buy a vitamin or mineral product simply because a child plays tennis. Start by discussing the overall diet and any concerns with a qualified professional. Whether a supplement is appropriate, and which product or amount, depends on the child. Excess vitamin D or iron can be harmful; a reference intake is not a treatment dose.

Persistent fatigue, pallor, poor recovery or a change in endurance deserves a medical discussion, not a diagnosis from this article. The clinician decides whether tests are needed and which ones are appropriate. Healthy children do not automatically need a standard blood-test panel before taking part in tennis.

A simple day example

Breakfast: oatmeal + yogurt + banana + berries.

Lunch: rice or pasta + chicken/fish + vegetable salad.

Snack: cottage cheese or yogurt + fruit, or a sandwich with cheese/turkey.

After training: water + food with carbohydrates and protein.

Dinner: potatoes/buckwheat/pasta + eggs/fish/meat + vegetables.

Heat does not automatically mean every child needs extra salt or an electrolyte product. Plan access to water, shade and rest, and adapt food and drink to the actual conditions and workload.

The conclusion is simple: vitamins and minerals are important, but their role is not to replace normal food. They support growth, health, recovery and stable play. The best diet for a junior tennis player is not tablets, but regular food: grains, meat or fish, eggs, dairy products, vegetables, fruit, legumes, nuts and enough fluid.

The day before a match is not the time for experiments. New dishes, food that is too spicy, fast food or heavy food can spoil how the player feels the next day. It is better to choose normal, familiar food that the player tolerates well.

A good dinner before the tournament:

• rice or pasta + chicken/fish/eggs + a small amount of vegetables;
• potatoes or buckwheat + meat/fish + salad;
• soup + bread + yogurt or cottage cheese.

It is important not to overeat late in the evening. The goal is not to "load up completely", but to recover normally, sleep well and go into the match with a light stomach and good energy.

Allow time to digest a familiar meal before play. A meal roughly three to four hours beforehand and a smaller snack closer to the start can be a useful planning example, not a strict timetable. Adjust the amount and timing to the player's age, tolerance and actual match time; rehearse the plan in training.

Suitable options before a match:

Three to four hours before:

• pasta or rice with chicken;
• oatmeal with banana and yogurt;
• potatoes + egg/fish;
• sandwich with turkey or cheese + fruit.

One to two hours before:

• banana;
• yogurt;
• muesli bar without heavy coating;
• toast with honey or jam;
• a small portion of porridge.

Fifteen to thirty minutes before, if there is light hunger:

• a few sips of water;
• half a banana;
• a little dried fruit;
• a small piece of an energy bar if the player has already tried it before.

Before a match, it is better to avoid fatty, fried and very heavy food: burgers, fries, large amounts of sausage, fatty sauces, soda and chips. This kind of food can cause heaviness, thirst and discomfort during movement.

American Academy of Pediatrics: food and drink around exercise

Drinking is not only something to do when strong thirst has already appeared. It is better to start the day with water and drink small portions during the day. USTA emphasizes that even mild dehydration can affect concentration, reaction and player engagement, and in heat or during long play, water alone is sometimes not enough.

Urine colour can be one rough clue about hydration, but vitamins, food and other factors can change it. It is not a diagnosis and should not be the only measure used. Do not force a child to drink until the urine is completely clear.

Before a match, suitable options are:

• water;
• water with electrolytes;
• a lightly diluted sports drink if the match will be long or hot.

Energy drinks and drinks with a lot of caffeine are a bad idea for young players. They can worsen wellbeing, sleep, heartbeat and concentration. For teenagers, it is better to build energy from food, water and normal recovery.

Heat does not automatically mean every child needs extra salt or an electrolyte product. Plan access to water, shade and rest, and adapt food and drink to the actual conditions and workload.

American Academy of Pediatrics: water and healthy hydration

For shorter, less demanding activity, water is often sufficient. Longer or more intense play, heat and repeated matches may call for additional food or a suitable carbohydrate-and-electrolyte drink. Do not automatically apply an adult grams-per-hour target to every child; agree a practical plan for the individual player with an appropriate professional.

In practice, this can look like this:

at every changeover - a few sips of water;

During a long day, offer small amounts of a familiar snack when appropriate and tolerated. A snack every thirty to forty-five minutes is not a requirement for every child or every match.

Heat does not automatically mean every child needs extra salt or an electrolyte product. Plan access to water, shade and rest, and adapt food and drink to the actual conditions and workload.

during a long match - banana, dried fruit, sports drink or a familiar bar.

Good match options:

• banana;
• raisins or dates;
• rice cakes;
• muesli bar;
• sports drink;
• water with electrolytes.

The main rule: do not try a new product for the first time at a tournament. If a bar, drink or gel has never been used in training, it should not be tested in an important match.

USTA: match-day nutrition (general tennis guidance, not a child-specific prescription)

Junior tournaments often include several matches in a day: singles, then doubles, then the next round. Food between matches depends on how much time there is before the next time on court.

If there is less than one hour before the next match:

• banana;
• yogurt;
• dried fruit;
• a small sandwich;
• sports drink;
• water.

If there are one to two hours:

• sandwich with chicken/cheese;
• a small portion of rice or pasta;
• omelet with bread;
• oatmeal;
• yogurt + fruit.

If there are three hours or more:

a normal meal: rice/pasta/potatoes + protein + a small amount of vegetables.

Between matches, the player should not eat too much. A full stomach makes it harder to run, start sharply and breathe normally. But skipping food completely is also wrong: the second match is often lost not only because of technique, but because of lack of energy.

After play, offer fluid and a familiar meal or snack containing carbohydrate and protein. Having it available within about thirty to sixty minutes can help with planning, especially when another session is close, but it is not a deadline after which recovery fails. Keep the rest of the day's meals in the plan too.

Good options after a match:

• yogurt + banana;
• sandwich with chicken or cheese;
• rice/pasta + meat or fish;
• omelet + bread;
• cottage cheese + fruit;
• smoothie with yogurt, banana and berries.

After a hard match, it is not enough to rely only on sweet soda or chocolate. They may give a quick lift in energy, but they do not solve the recovery task.

American Academy of Pediatrics: food and drink around exercise

A junior tennis player should always have food and drink available. A tournament can be delayed, a match can start later, and there may be no normal cafe nearby.

Minimum kit:

• bottle of water;
• electrolytes or sports drink for heat and long matches;
• one or two bananas;
• muesli bar;
• dried fruit;
• sandwich;
• yogurt or cottage cheese in a cooler bag;
• a light salty snack if it is hot and the player sweats a lot.

It is better to pack the bag in advance in the evening, rather than look for food already at the courts.

The following timetable is an example for a match expected at 10:00, not a prescription. Adjust it for actual scheduling, appetite, allergies and the player's needs. If the match is delayed, reassess food and drink rather than following the clock mechanically.

07:00-07:30 - breakfast: oatmeal with banana, yogurt, water.

09:15 - light snack: half a banana or a small bar, a few sips of water.

During the match: water at changeovers, and if play is long, banana or a sports drink.

After the match: yogurt + fruit or a sandwich, water.

If the second match is in two to three hours: a small portion of rice/pasta with chicken.

In the evening: a normal dinner with carbohydrates, protein and vegetables.

The most common mistake is going on court hungry. The second is drinking only when the player is already very thirsty. The third is eating heavy food right before the match. The fourth is trying new bars, drinks or supplements on tournament day. The fifth is thinking that nutrition matters only for professionals.

In reality, nutrition already matters in junior tennis. It does not replace training, technique or character, but it helps the player show what they can do.

A proper tennis player diet is not a strict "sports diet" and not a refusal of normal food. It is a clear routine: eat in advance, drink regularly, have a match snack, recover after play and do not experiment on tournament day. For a junior tennis player, the best nutrition plan is the one that gives energy, does not disturb the stomach, fits the match schedule and has already been tested in training.

Do not use food restriction to make a growing player lighter for competition. Persistent problems with eating, growth, fatigue or recovery need qualified assessment. If a player becomes unwell in the heat, stop activity and obtain appropriate help; a snack or sports drink does not replace assessment.

This article gives general educational information, not an individual diet or supplement prescription. Food choices and amounts depend on age, growth, activity, tolerance and health. Adapt examples for allergies, medical conditions and dietary needs with an appropriate professional. The nutrient figures below are United States dietary reference intakes, not extra sports doses. TTP has not obtained independent clinical review of this article.