Find your fourth.
Fast.

Never scramble for a fourth again. Short a player? Find a 4th finds matched players nearby and handles the outreach — so your game never falls apart at the last minute.

Try the Beta
Smart Fill
Recommendations
9:41 •••
Recommended for your game
Sarah K.
DUPR 3.8 · 1.2mi away
Invite
Mike T.
DUPR 3.7 · 0.8mi away
Invite
Priya S.
DUPR 3.9 · 2.4mi away
Invite
Never scramble for a fourth✦ Smart recommendations nearby✦ Auto-fill when someone cancels✦ DUPR-matched✦ Never scramble for a fourth✦ Smart recommendations nearby✦ Auto-fill when someone cancels✦ DUPR-matched✦

Why Find a 4th exists

Never get caught a player short.

Group-based apps

Closed circles.

Stuck inside a closed group of 8 — and they're all booked tonight.
"Anyone free Thursday?" Group text sent to 14 people. Three maybes.
Someone bails at 5:55pm. No replacement. Game dies.

With Find a 4th

Open network.

No groups needed. Every player in your network is a potential 4th.
Smart Fill does the work. The app finds matched players nearby — by DUPR, schedule, and frequently visited courts — and sends the invites for you.
Auto-backfill. Someone drops? We instantly alert eligible nearby players so your game stays on.

Three ways to share a game

Post it your way.

You choose who sees each game — from your close crew to the whole Find a 4th network. Then Smart Fill handles the rest.

Your network.

Share with players you've connected with. Anyone matched can grab the spot.

Public.

Open it to the whole Find a 4th network. Any matched player nearby can join.

Private.

Pick your players. We send the invites and ping you when they accept.

Whichever you choose, the app does the work. Find a 4th sends the messages, tracks responses, and confirms your roster.

Standing games? No problem.

Set it once. Play every week.

Love your regular Sunday foursome? Create a private group and set it as recurring — the app handles reminders, invites, and backfill if someone can't make it.

Sunday Crew Standing game · Sundays 9am ↻ Recurring
4 regulars · Kiwanis Park · invite-only

How it works

Four steps. Zero group texts.

Set Up Profile

— Step 01

Set up your account

Add your details, including your DUPR (optional), set your locations and the courts you typically play at. You're now in the network.

Build Network

— Step 02

Build your network

Search for players by name and add your regular partners. Connect with new players as you meet them. Your network grows every game.

Post a Game

— Step 03

Post a game

No group required. Set the time, court, and criteria, then choose who sees it: a private group, your connections, or the whole Find a 4th network. Short a player? The app finds you matches.

Confirmed

— Step 04

Show up & play

Roster filled. Game confirmed. Someone cancels? Let us help you find your 4th.

Now in Beta

Your fourth
is already in the network.

Help us grow the network. Find a 4th launches as a Beta web app — open it in your browser, add it to your home screen, and play. No app store. No install.

Try the Beta →