From ebe6dee89239843ceffb18c48e213b43337570dd Mon Sep 17 00:00:00 2001
From: Aurastic <33085835+ISenseAura@users.noreply.github.com>
Date: Sun, 15 Mar 2026 16:57:08 +0530
Subject: [PATCH] Preact: Fix team requirement logic for custom named
 tournaments (#2579)

---
 play.pokemonshowdown.com/src/panel-mainmenu.tsx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/play.pokemonshowdown.com/src/panel-mainmenu.tsx b/play.pokemonshowdown.com/src/panel-mainmenu.tsx
index 5005d47df..e2b62b2cb 100644
--- a/play.pokemonshowdown.com/src/panel-mainmenu.tsx
+++ b/play.pokemonshowdown.com/src/panel-mainmenu.tsx
@@ -830,10 +830,12 @@ export class TeamForm extends preact.Component<{
 	submit = (ev: Event, validate?: 'validate') => {
 		ev.preventDefault();
 		let format = this.format;
+		// in tournaments, format is the custom name & teamFormat is the original format.
+		const teambuilderFormat = this.props.teamFormat || PS.teams.teambuilderFormat(format);
 		const teamElement = this.base!.querySelector<HTMLButtonElement>('button[name=team]');
 		const teamKey = teamElement!.value;
 		const team = teamKey ? PS.teams.byKey[teamKey] : undefined;
-		if (!window.BattleFormats[PS.teams.teambuilderFormat(format)]?.team && !team) {
+		if (!window.BattleFormats[teambuilderFormat]?.team && !team) {
 			PS.alert('You need to go into the Teambuilder and build a team for this format.', {
 				parentElem: teamElement!,
 			});