Baseball Game Day: Fuel, Hydration, Heat and Doubleheaders

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A July travel-ball tournament. It’s the third game of the day, the bleachers are hot to the touch, and the catcher has been squatting in full gear since nine in the morning. A college doubleheader on a humid Saturday feels much the same, and so does a summer-league game under the lights after a long day at work. Baseball isn’t a sprint from start to finish. It’s hours in the sun, short bursts of all-out effort and a lot of waiting, which makes baseball game day nutrition and hydration easy to get wrong. This page covers what to eat before, what to drink during, how to handle the heat, and how to get through doubleheaders and tournament weekends.

General information, not medical advice. A registered sports dietitian can build a plan for you. The big picture is on our baseball hub.

The pre-game meal

The joint position of the American College of Sports Medicine (ACSM), the Academy of Nutrition and Dietetics and Dietitians of Canada says a meal 1 to 4 hours before exercise should be rich in carbohydrate, with moderate protein and familiar foods. Very fatty, high-protein or high-fiber choices may need to be limited to avoid an upset stomach. For a noon first pitch, that could be a bowl of rice or pasta with chicken at 9, then a banana or a bagel an hour before warm-ups. Game day is not the day to try a new food.

Hydration: before, during and after

AAOS’s baseball and softball guide gives a simple routine: drink about 24 ounces of non-caffeinated fluid 2 hours before, another 8 ounces of water or sports drink right before, and an 8-ounce cup every 20 minutes while you play. In baseball, the dugout between half-innings is your water break, so use it. The NFHS says urine should be straw yellow, or the color of lemonade, when you’re well hydrated.

Don’t overdo it either. The National Athletic Trainers’ Association (NATA) says athletes should aim to lose no more than 2% of body weight to sweat, but should not gain weight from drinking, because too much plain water can dilute the blood’s sodium (hyponatremia). Weigh yourself before and after a hot practice to learn your own sweat rate. On long, hot days, a drink or tablet with sodium helps replace what you sweat out. The NFHS says energy drinks are not a hydration fluid, and the American Academy of Pediatrics says they have no place in the diets of children and teens.

A big bottle you can track, like the Nalgene 32 oz, makes this easier. Many players drop in an electrolyte tablet such as Nuun Sport (300 mg sodium per tablet; the maker says it’s Informed Choice certified). Players who are drug-tested often choose an NSF Certified for Sport mix like Thorne Advanced Electrolytes. Our electrolyte powder guide compares more. If you have high blood pressure, heart or kidney problems or follow a low-sodium diet, check with your doctor first.

Heat: the real risk in summer baseball

Summer ball means long hours in the sun. The EPA says about 9,000 high school athletes are treated for heat illness each year. AAOS tells coaches to check the weather and be ready to delay or cancel a game in very hot weather. NATA’s advice on exertional heat illness:

• Get used to the heat gradually, over 7 to 14 days, at the start of summer practice.
• Watch the catcher. They wear the most gear and work every pitch. Shade, fluids and taking the helmet and mask off between innings help them feel better (a practical tip, not a medical treatment).
• Know the warning signs: headache, nausea, dizziness, heavy fatigue. Confusion, odd behavior or collapse can mean exertional heat stroke, a medical emergency.
• Cool first, transport second. NATA says cold-water immersion is the most effective cooling. Call 911 and, if medical staff are on site, start cooling right away.

Thunderstorms are the other summer danger. NATA’s rule is “When thunder roars, go indoors”. No place outside is safe. Wait until 30 minutes after the last thunder and lightning before going back out. Shelter in a building with wiring and plumbing or a fully enclosed metal vehicle.

Doubleheaders and tournament weekends

Two or three games in a day changes the plan:

• Eat between games. When the next session is less than 8 hours away, ACSM’s advice is to refuel quickly with carbohydrate in small, regular snacks. Pack a cooler: sandwiches, fruit, pretzels, chocolate milk, yogurt.
• Rehydrate properly. ACSM says to drink about 125–150% of the fluid you lost (1.25 to 1.5 liters for each kilogram of weight lost).
• Protect the arms. Pitch Smart says a pitcher should not pitch in more than one game in a day or on three days in a row, regardless of pitch counts, and the rules should be followed across leagues, tournaments and showcases. Little League sets required rest days by pitches thrown. Keep a log, because the next team’s coach won’t know how much a player threw yesterday.
• Don’t stack catcher and pitcher. Pitch Smart advises against playing catcher while not pitching, since catchers throw almost every pitch back.
• Head knocks: any player with concussion signs sits out the rest of the day and every remaining game until a healthcare provider clears them (CDC HEADS UP).

A cooler, a couple of big bottles, sunscreen, a towel and a change of socks will save the second game. Our baseball recovery page covers the evening after, and baseball nutrition covers the rest of the week.

Game-day checklist

• Meal 3 to 4 hours before, snack 1 hour before.
• 24 oz of fluid 2 hours before, 8 oz before warm-ups, drink every half-inning in the dugout.
• Electrolytes on hot days; no energy drinks for kids and teens.
• Pitch count tracked and logged; know your league’s rest rules.
• Know the heat-illness signs, the lightning plan and where the AED is.

Baseball game-day FAQs

What should a baseball player eat before a game?

A familiar meal rich in carbohydrate, with some protein and not too much fat or fiber, 1 to 4 hours before, as ACSM recommends. Rice, pasta, a sandwich or a bagel with a banana are common choices. Add a small snack an hour before if you’re hungry.

How much water should a baseball player drink during a game?

AAOS suggests about 8 ounces every 20 minutes while playing, after 24 ounces 2 hours before and 8 ounces right before. Sweat rates vary a lot, so NATA suggests learning yours by weighing before and after, and not drinking so much that you gain weight.

Can a pitcher pitch in both games of a doubleheader?

Pitch Smart says no: players should not pitch in multiple games on the same day. Leagues set their own rules, so check yours, but the guideline is the same for every age group, from 8 and under to 19–22.

Are energy drinks OK before a baseball game?

Not for hydration, says the NFHS, and the AAP says they have no place in the diets of children and teens. Adults who use caffeine should know their tolerance; it isn’t for everyone, especially with heart conditions or in pregnancy, so check with a doctor.

What are the signs of heat stroke on the field?

Confusion, odd behavior, stumbling or collapse in the heat. Call 911 and start cooling right away, ideally with cold-water immersion. NATA’s rule is to cool first and transport second when trained staff are present.

Eat early, drink every half-inning, respect the heat and count the pitches. Next: baseball training, injuries and recovery. For another sport’s long summer days, see soccer game day.