1. Umpire has final authority
The umpire's decisions regarding line calls, faults, lets, scoring, time violations, and conduct are final during the match. Players should not argue or repeatedly challenge an umpire's decision.
2. Players may request clarification A player may respectfully ask the umpire for clarification. The player may not continue arguing after the umpire has explained the decision.
3. Line calls The umpire is responsible for making line calls when assigned to do so. Players should not make conflicting calls while an umpire is officiating. If the umpire makes a call, that call stands unless the umpire changes it.
4. Foot Faults When an umpire is present, the umpire has sole authority to call foot faults. The server must not touch the baseline, the court inside the baseline, or the singles/doubles sideline or its imaginary extension before striking the serve. A foot fault is treated as a service fault. Umpires will issue 1 warning per player and all subsequent foot faults are called fault. Players should not call foot faults themselves when an umpire is officiating.
5. Score The umpire maintains the official score. The score should be announced before each point. If a player believes the score is incorrect, they should raise the issue before the next point whenever possible.
6. Challenges / disputes Players should raise an issue immediately. Once the next point has started, a previous point generally should not be disputed unless the umpire determines that a correction is necessary.
7. Player conduct Players must: Respect the umpire. Respect the opponent. Avoid abusive language or gestures. Avoid racquet abuse. Avoid intentionally delaying play. Follow the umpire's instructions.
8. Umpire instructions Players must follow reasonable instructions from the umpire regarding match procedure, timing, court position, scoring, and conduct.