Deck Registration
Tournament Rules section 401 — 10 rules. From Riot's Tournament Rules for sanctioned events, last updated October 9, 2026.
- 401.1.
- Players in competitions are required to register their decks and sideboards (if applicable to the format) at high OPL.
- 401.1.a.
- The Head Judge may require deck registration at low OPL.
- 401.1.b.
- Even when a low OPL constructed event does not require deck registration, players are expected to use the same deck throughout the event unless given permission by the tournament organizer.
- 401.2.
- A registered decklist must have a complete, unambiguous record of the player’s Champion Legend, battlefields, Main Deck including Chosen Champion, Rune Deck, and sideboard (if applicable to the format).
- 401.2.a.
- They must also include registered records of any cards selected for special additional deckbuilding rules. (Example: The three Legends selected for Neeko, Blending In must be registered on a player’s decklist and can’t be changed once they are submitted.)
- 401.3.
- Once a decklist has been registered and delivered to a competition official, it can’t be changed.
- 401.4.
- In a constructed event, a player’s deck must be registered prior to the start of the first round of competition.
- 401.5.
- Other player’s decklists are normally considered private information. The head judge of an event may run that event or the final rounds of that event using an open decklist policy. In this case, all players’ decklists will be considered public information.
- 401.5.a.
- In an open decklist competition, each round players are provided with their opponent’s decklist to review at the start of the match and in between games of the match. Players may not review decklists during gameplay.
- 401.5.b.
- Typically, professional OPL competitions should be run with open decklists, but it is ultimately up to the discretion of the head judge regardless of the event level.