What Is Tennis Toe — And How Do You Stop It?

June 16, 2026

If your toenail has ever turned black after a match, you've had tennis toe. It's one of the most common foot complaints among tennis, pickleball, and racquetball players — and it's almost entirely preventable.

What Is Tennis Toe?

Tennis toe is a condition where repeated trauma to the toenail causes bleeding under the nail plate — a subungual hematoma. The blood pools beneath the nail, turning it dark red, purple, or black. In severe cases, the nail falls off entirely. It's most common in the big toe, but the second toe is frequently affected too.

Why Court Sports Are Especially Hard on Your Toes

Tennis, pickleball, and racquetball all involve one specific movement that destroys toenails: the hard stop. Every sprint to the net, lunge for a drop shot, or directional change sends your foot sliding forward, slamming toes into the front of the shoe.

Over and over, point after point. Pickleball players, take note: despite smaller courts, pickleball's rapid side-to-side movement and quick directional changes create the same toe-jamming pattern. As the fastest-growing sport in the U.S., pickleball-related foot injuries are rising fast — emergency department visits for pickleball injuries grew significantly between 2013 and 2022.

Who Gets Tennis Toe Most Often?

Players with longer second toes
Hard court players (harder surface = sharper stops)
Players wearing shoes that are slightly too small or too narrow
Anyone who doesn't replace worn court shoes (toe box cushioning degrades before the outsole)

The Fix Most Players Miss

Standard advice — better shoes, trimmed nails — helps but doesn't fully solve the problem. Even perfectly fitted shoes allow forward slide during explosive stops. What actually works is a cushioned barrier between toe and shoe before impact happens. Toe Bumpers are thin protective toe caps that fit over your toes inside your sock, absorbing the repeated forward slam. They fit shoe sizes 6–10 and work in any court shoe without affecting fit.

Other Things That Actually Help

Wear Toe Bumpers. They're thin cushioned toe socks that fit over your toes inside your sock — creating a protective barrier between your nail and the shoe's interior. They absorb the repeated forward impact before your nail bed does. Fits shoe sizes 6–12, works in any court shoe without changing fit or feel. This is the single most effective thing you can do if you're already in properly fitted shoes and still losing nails.
Replace court shoes every 6–12 months if you play regularly. The toe box cushioning breaks down long before the outsole wears out.
Keep toenails trimmed straight across — short enough that they don't touch the end of the shoe interior. Not rounded, not angled.
Use a heel-lock lacing pattern to reduce how much your foot slides forward on hard stops.
Wear moisture-wicking socks — wet feet slide more inside the shoe, increasing the force on every stop. Merino wool or synthetic performance socks make a real difference.