Umpiring a Table Tennis Match: A Practical Guide for Organizers

You do not need an international umpire to run a good community tournament. You do need people who know the handful of calls that cause nearly every argument, and a clear rule for who decides when they disagree.

Rules guide · Updated October 4, 2026

Self-umpiring, markers and umpires

Most community events use three levels. Early rounds are self-umpired: the players keep score and make their own calls. Mid-rounds use a marker, usually a waiting player who keeps score and calls the points but does not rule on faults. Semifinals and finals get a qualified umpire if you have one. Decide the levels in advance and print them on the schedule so nobody has to negotiate on the day.

Self-umpiring works on honesty. Brief players on the two habits that keep it civil: the server calls the score before every serve, and a player who is unsure whether a ball touched the edge gives the point to the opponent.

Before the match

A consistent routine takes about three minutes and prevents most disputes.

1. Confirm the names and categories match the draw. Many walkovers and wrong-opponent matches are discovered here.
2. Spin a coin, or use a marked ball or racket, for the choice. The winner may choose to serve, receive or start at a particular end; the other player gets the remaining choice.
3. Rackets must be shown to the opponent and the umpire before the match. Check both sides for the required matt black and a bright contrasting color, and for approved coverings if your event requires them.
4. Allow a short practice period. Two minutes is the common figure in the ITTF regulations, but confirm your own event rules.

Keeping and calling the score

A game goes to 11 points, and a player must win by two. A match is the best of any odd number of games, which is how you set up best-of-three early and best-of-five late. Call the server’s score first, for example “four–two” when the server has four. Announce the score loudly enough that the players hear it before the next serve.

Service changes every two points. At 10–10, and under the expedite system, it changes after every point. Players change ends after each game, and in the deciding game at the moment either player first reaches five points. This is the most commonly forgotten rule. Put it on a card at the umpire’s table.

Service: the call that starts most arguments

A legal service has these parts:

• The ball rests freely on the open, flat palm of the stationary free hand.
• It is thrown near vertically upward, without spin, and rises at least 16 cm.
• It is struck as it falls, and it touches the server’s court first and then the receiver’s court. In doubles, it goes from the server’s right half to the receiver’s right half.
• From the start of the service until it is struck, the ball is above the level of the table and behind the end line, and it is not hidden from the receiver.
• The free arm and hand leave the space between the ball and the net once the ball is projected.

The Laws put the responsibility on the server to make the service clearly legal. If the umpire is unsure on the first occasion in a match, he or she may interrupt play and warn the server; after that, a service that is not clearly legal is a fault. In self-umpired matches, the receiver can raise a doubtful service once, politely, and then the server corrects it.

Lets, edges and nets

A let replays the rally. The common causes are a service that touches the net assembly but is otherwise correct, a service delivered when the receiver was not ready and did not try to hit it, and a disturbance outside the players’ control such as a ball rolling onto the court. A ball that clips the net during a rally and goes over is simply good.

A ball that hits the edge of the table top is good. One that hits the vertical side below the edge is not. Without an umpire, the players must agree; if they cannot, replay the point rather than escalating.

The expedite system

After ten minutes of play in a game, or earlier if both players ask for it, the expedite system begins unless at least 18 points have already been scored in that game. Each player then serves for one point at a time, and if the receiver makes 13 correct returns in a rally, the receiver scores the point. Once introduced, it applies for the rest of the match. It rarely matters in a beginner event, but a long defensive match in the semifinals can trigger it, so make sure whoever umpires has a timer and knows the rule.

Conduct and warnings

Most governing bodies use a yellow card for a first offense, with penalty points for repeat offenses in the same match, and a red card for serious misconduct. Details vary, and the card system generally applies only where an umpire or referee is present. Decide in advance what you will do about swearing, racket abuse and kicking the table at the briefing, and tell players that the referee’s decision on conduct is final.

Coaching rules also vary. Under current ITTF regulations, advice is generally allowed at any time except while the ball is in play, provided it does not delay the match, but check your own governing body’s version and announce a house rule for your event.

When to call the referee

The referee is the single person who decides rule questions and conduct issues across the whole event. Tell players where to find him or her. Call the referee when players disagree about a rule (not just a call), when equipment is challenged, when a player is injured, or when a player refuses to follow an umpire’s decision. The referee should not also be the person running the desk, which is why staffing matters.