How to choose a tournament format?
There's no single "best" format — each has its use. The choice depends on three factors: number of participants, available time, and the tournament's purpose (do you want a spectacle, a fair result, or to give everyone as much play as possible?).
| Participants | Time | Recommended format |
|---|---|---|
| 4–8 | 2–4 hrs | Round robin |
| 8–16 | 2–3 hrs | Single elimination |
| 10–24 | 3–5 hrs | Swiss system |
| 16–32 | 4–6 hrs | Round robin groups + playoff |
| 32+ | 6+ hrs | Two-stage tournament (groups → bracket) |
Tournament formats — a detailed breakdown
Single Elimination
Classic knockout — the loser is outIn a single-elimination bracket, every lost match means elimination from the tournament. The two finalists compete for first place, and the semifinal losers can play a match for 3rd place. Pairings are drawn before the tournament — usually with the top players seeded.
Number of matches: n−1 (where n is the number of participants). With 16 players = 15 matches in the main bracket + 1 match for 3rd place.
When to use it: Spectator-focused tournaments, limited time, a large number of participants, when the drama of the final matches matters.
Round Robin
Every participant plays every other oneIn a round robin, everyone plays everyone. Results are collected in a table, and the final ranking is decided by total points (win = 2 or 3 pts, loss = 0 or 1 pt). If points are tied, set or ball ratio decides the ranking.
Number of matches: n × (n−1) / 2. Examples: 4 players = 6 matches, 6 players = 15 matches, 8 players = 28 matches.
When to use it: Internal club tournaments, a small number of participants (up to 8–10), situations where a fair result matters and everyone wants to play as much as possible.
Swiss System
Everyone plays the same number of rounds, pairings by resultsIn the Swiss system, everyone plays a fixed number of rounds, but no one is eliminated. After every round, players are paired with others who have a similar point total (winners play winners, losers play losers). No one plays the same opponent twice.
Optimal number of rounds: ⌈log₂(n)⌉ + 1. In practice: 8–10 players = 4–5 rounds, 16–20 players = 5–6 rounds, 32–40 players = 6–7 rounds.
When to use it: Tournaments with a medium number of participants (10–40), when there's no time for round robin but you want everyone to play more than 1–2 matches.
Two-Stage Tournament
Group stage + playoffA two-stage tournament combines two formats: in the first stage, participants play in groups (round robin or Swiss), and a set number of players advance from each group. Those who advance form a playoff bracket (single elimination). This is the most elaborate and spectator-friendly format.
Example configuration: 24 players → 4 groups of 6 → the top 2 from each group advance → 8 players in a single-elimination bracket (quarterfinals, semifinals, final).
When to use it: Larger events (16+ participants), when you want an exciting final while also giving everyone a chance to play several matches before possible elimination.
Practical tournament preparation
Before the tournament
- Venue and tables: count your tables — a single-elimination bracket needs just 1–2 tables, while a round robin with 8 players is comfortable with 3–4. ITTF table tennis tables measure 274 × 152 cm, plus a safety zone of at least 1.5 m around them.
- Balls and rackets: prepare a stock of balls (at least 6–10 per table) and a scoreboard or a tournament-management app.
- Entry list: collect sign-ups in advance — impromptu tournaments with no list are hard to run fairly. Set a limit on spots.
- Format and rules: decide on the format and scoring rules before players arrive — you'll avoid arguments and confusion during the event.
Check-in and start
Check-in confirms a player's physical presence before the start. Open the check-in list 30–45 minutes before the planned start time. Players who don't check in before the draw shouldn't be included in the bracket — this avoids empty slots and walkovers.
In Przy Stoliku, check-in is one click per participant. Once the list closes, the bracket or groups are generated automatically — using only the players present. Results update in real time, and participants can follow the bracket on their phones with no login required.
Running the event
- Umpiring: at smaller tournaments, players umpire their own matches. At larger ones, it's worth designating a head referee to settle disputes.
- Communication: call matches loudly or via a board. Participants should know where and when they're playing — confusion when calling matches causes delays.
- Delays: set a rule that a player not at the table 5 minutes after being called forfeits by walkover. This keeps the tournament moving.
Closing and awards
- Announce the final results and thank all participants
- Trophies or medals for 1st–3rd place — even small prizes motivate people to join the next edition
- Photograph the winners and publish the results — this builds a community around the tournament
- Collect feedback from participants — what worked, what's worth changing