The chair umpire is the official who sits in the raised chair beside the net and controls a tennis match. They announce the score, enforce the rules, manage player conduct and make decisions whenever an incident occurs on the court.
Some spectators use “tennis referee,” “tennis ref” or “tennis judge” as general descriptions for this person. A chair umpire does perform a referee-like role because they enforce the rules, but chair umpire is the correct official title. In professional tennis, the referee is a separate off-court official responsible for the entire tournament.
What Does a Tennis Chair Umpire Do?
A tennis chair umpire is responsible for conducting one match according to the applicable rules and tournament regulations. Their work begins before the first point and continues until the result has been recorded and any incidents have been reported.
Before the match, the chair umpire arrives on court, confirms the players’ identities, checks the available equipment and explains any relevant conditions of play. They also conduct the coin toss that determines which player serves, receives or chooses an end first.
During the match, the chair umpire:
- Announces the score after every point
- Records points, games and sets
- Times the warm-up, changeovers and set breaks
- Enforces the time allowed between points
- Calls lines when no line umpires are present
- Applies the tennis code violations
- Manages ball changes
- Controls disturbances from spectators
- Decides questions of fact
- Makes the first decision on questions involving tennis law
- Determines whether the court remains safe and suitable for play
The chair umpire must understand the tennis scoring system, tournament regulations and the basic rules and regulations of tennis. According to the ITF Duties and Procedures for Officials, the chair umpire is also responsible for reporting any Code of Conduct action to the tournament referee after the match.
Is a Tennis Chair Umpire the Same as a Referee?
A chair umpire and a tennis referee are not the same official. The chair umpire controls one match from the court, while the referee oversees the operation and officiating of the entire tournament.
| Official | Main responsibility | Location | Authority |
|---|---|---|---|
| Chair umpire | Conducts one match | On court | Decides questions of fact and makes the first ruling on questions of law |
| Referee | Oversees the tournament | Primarily off court | Acts as the final on-site authority on rules and tournament regulations |
| Line umpire | Watches an assigned line | On court | Calls balls out and identifies faults on that line |
| Chief umpire | Manages the officiating team | Around the tournament site | Recruits, schedules and evaluates on-court officials |
A question of fact concerns what physically happened. Examples include whether a ball landed in or out, whether it bounced twice or whether a player touched the net. The chair umpire’s decision on a question of fact is normally final unless an approved electronic review system is available.
A question of law concerns how a rule should be interpreted or applied. The chair umpire makes the initial ruling, but a player may ask for the tournament referee if they believe the rule has been interpreted incorrectly. The referee does not come to court simply because a player disagrees with a line call.
What Are Tennis Judges Called?
“Tennis judges” is an informal expression rather than a single official position. The ITF identifies four principal officiating roles: chair umpire, line umpire, referee and chief umpire. Review officials, roving umpires and other assistants may also be used depending on the competition.
The expression “lawn tennis officials” refers to these same roles. Officials do not receive different titles based on whether the match is played on grass, clay or a hard court.
Chair Umpire
The chair umpire is the most visible official. They manage the match, announce the score, enforce timing rules, address misconduct and coordinate the other on-court officials.
A chair umpire must remain neutral even when players, coaches or spectators disagree with a decision. Clear communication is essential because everyone on the court must understand the score, penalties and reasons for any interruption.
Line Umpire
A line umpire watches one assigned line and decides whether the ball landed in or out. The term “linesman” is still used in some searches and conversations, but line umpire is the current official title.
Line umpires call “out” when a ball misses the line and “fault” when a serve lands outside the correct service box. They may also call foot faults when assigned to the relevant baseline, sideline or centre service line. If they cannot clearly see where the ball landed, they give an unsighted signal rather than guessing.
Chief Umpire
The chief umpire manages the on-court officiating team. This can include recruiting officials, conducting pre-tournament training, preparing daily assignments, organising rotations and evaluating performances.
The chief umpire works closely with the tournament referee. However, the referee retains overall authority and must approve important officiating assignments and changes.
Roving Umpire
A roving umpire supervises one or more courts rather than remaining in a chair for one match. This role is particularly common at junior, collegiate, recreational and national tournaments where players call their own lines.
Roving umpires may enforce warm-up and rest times, resolve scoring disputes, call foot faults, observe player conduct and control spectators. Their exact authority depends on the rules of the tournament and national association. The USTA officiating structure, for example, uses roving umpiring as an important entry point for new officials.
Review Official
A review official works with electronic line-calling technology. They monitor the system, communicate with the chair umpire and manage the review process when a player challenges a call or a technical problem occurs.
The chair umpire remains responsible for the match even when electronic line calling is used. Technology can determine where the ball landed, but it does not manage the score, timing, player behaviour or interpretation of other rules.
Can a Chair Umpire Overrule a Line Umpire?
A chair umpire can overrule a line umpire when the original call was a clear mistake. The overrule must be made promptly after the incorrect call rather than several points later.
For example, if a line umpire calls a ball out but the chair umpire clearly sees it touch the line, the chair umpire can correct the call to “correction, the ball was good.” The chair umpire may also call a clear foot fault that the responsible line umpire missed.
Players cannot force an overrule simply by arguing. If the chair umpire did not clearly see an error and no electronic review is available, the original call stands.
Is Electronic Line Calling Replacing Line Umpires?
Electronic line calling is replacing human line umpires at some major professional tournaments, but not throughout tennis. Live Electronic Line Calling automatically determines whether a ball is in or out, meaning no line umpires are required on that court.
The ATP introduced Live Electronic Line Calling across its tour from 2025, covering every court line traditionally assigned to human line judges. The ATP confirmed that the system would become tour-wide, while Wimbledon also introduced live electronic calls on all match courts from 2025.
Human line umpires are still used at competitions where the technology is unavailable or not required. Local, national, junior, collegiate and some international events therefore continue to provide opportunities for traditional line officiating.
How to Become a Tennis Chair Umpire
Anyone wondering how to become a tennis official should begin with their national tennis association. Officiating education, eligibility requirements and certification procedures vary between countries, so applicants should not apply directly to a professional tour without first gaining national-level experience.
The usual pathway involves:
- Contacting the national tennis association
- Completing introductory rules and officiating courses
- Meeting membership, safeguarding or vision requirements
- Shadowing experienced officials
- Working at local and national tournaments
- Receiving evaluations and further training
- Specialising as a chair umpire, referee, line umpire or chief umpire
- Applying for international certification after gaining sufficient experience
In the United States, prospective officials create an OfficialsFirst account, complete introductory and roving umpire courses, satisfy USTA membership and Safe Play requirements, submit evidence of suitable vision and complete on-court shadowing. Other national associations use their own versions of this process.
Someone learning how to become a tennis chair umpire must develop more than rules knowledge. They must learn scorecard procedures, announcements, timing, positioning, Code of Conduct administration, player communication and how to remain composed during disagreements.
How Does an Umpire Reach Professional Tennis?
Professional tennis officiating is reached gradually through training, practical assignments and strong evaluations. Officials normally work local and national competitions before being considered for international certification.
The ITF officiating pathway includes National certification, Level 1 Green Badge, Level 2 White Badge and Level 3 international certification. Bronze, Silver and Gold Badge officials work at increasingly important international tournaments, with promotions based on experience, performance and evaluations.
Obtaining a qualification does not guarantee immediate assignments at ATP, WTA or Grand Slam events. Officials must demonstrate consistently accurate decision-making, professionalism and reliability over an extended period.
How to Become a Tennis Line Umpire
The process for becoming a line umpire also begins with a national association. Applicants complete the required foundation courses before receiving specific instruction on line calls, hand signals, positioning, foot faults and communication with the chair umpire.
A line umpire needs excellent concentration and must make immediate decisions without anticipating where the ball will land. New officials generally gain experience at local tournaments before progressing to national and international competitions.
Although people frequently search for how to become a tennis linesman, applicants should look for “line umpire” courses on their national association’s website. This is the title now used in official tennis documentation.
What Skills Does a Tennis Umpire Need?
Successful umpiring in tennis requires concentration, confidence and detailed knowledge of the rules. Officials may work long matches in heat, cold or difficult crowd conditions while remaining focused on every point.
Important skills include:
- Excellent knowledge of tennis rules
- Clear and controlled communication
- Strong concentration
- Suitable eyesight and hearing
- Fast but considered decision-making
- Neutrality and professionalism
- Accurate scorekeeping
- Ability to manage conflict
- Physical endurance
- Willingness to travel and continue training
The best chair umpires are authoritative without unnecessarily becoming part of the match. Their job is to keep play fair and orderly while allowing attention to remain on the players.
Do Tennis Chair Umpires Get Paid?
Tennis officials are normally paid for tournament assignments, but earnings vary considerably. The event level, officiating certification, country, travel requirements and number of working days can all affect the fee.
The ITF publishes recommended minimum fees for certain international tournaments, while national associations may establish their own local arrangements. Beginners should expect to build experience at community and national events before receiving the more valuable professional assignments.
Final Thoughts
The person sitting beside the net is correctly called a tennis chair umpire, not a tennis referee. They are referee-like in the everyday sense because they enforce rules and manage disputes, but the official referee is responsible for the tournament as a whole.
Chair umpires, line umpires, referees, chief umpires and review officials each perform different parts of tennis officiating. Becoming one requires formal education, practical experience and consistent evaluations, with the most successful officials progressing from local tournaments to international competition.