All volunteer guidesTeam Scout

Swim & Dive Volunteers

How to Be a Stroke & Turn Judge

You walk a stretch of deck and watch swimmers for legal strokes, turns, and finishes. When you clearly see a violation, you raise an open hand and tell the referee, who confirms it. One rule governs everything: only call what you saw with 100% certainty. The swimmer always gets the benefit of the doubt.

Level
A little practice
Time
Certification clinic + meet sessions
You watch
Strokes, turns, finishes
To report
Raise an open hand
Certainty bar
100%, or it didn't happen
Requires
USA Swimming clinic

Quick start

  1. 1

    Get certified first

    This role needs a short USA Swimming stroke-and-turn clinic. It's mostly video of legal vs. illegal swims, and it makes the calls obvious.

  2. 2

    Know your zone

    The referee assigns you a section of deck and which walls or turns to watch. You walk it with your eyes on the water, not the clock.

  3. 3

    Watch for the clear stuff

    Things like a one-hand touch on breaststroke or butterfly, no touch on a turn, or an illegal kick. If it's clean and obvious, it's a call.

  4. 4

    Raise your hand

    On a certain violation, raise an open hand to signal the referee. Don't shout or stop the race, just signal and hold onto what you saw.

Watch first

USA Swimming — How to Officiate Backstroke

From the national governing body: exactly what a stroke-and-turn judge watches for on a turn and finish.

USA Swimming Stroke Briefing for Officials

The real pre-meet briefing officials get, across all four strokes.

As a stroke-and-turn judge, you're one of the people who keeps the racing fair for every swimmer. You walk a stretch of deck the referee assigns you and watch the swimmers' technique: were the strokes legal, did they touch the wall correctly, was the finish clean. You don't run the clock or place finishers. You watch one thing, did everyone follow the rules of their stroke.

  1. 1

    Take your zone

    The referee tells you which section and which turns or finishes to watch. Position yourself where you can clearly see hands touching the wall.

  2. 2

    Watch the swim

    Track the technical rules for the stroke being swum, the touch, the kick, the turn, the finish. Move along the deck with your swimmers as needed.

  3. 3

    See a clear violation

    Raise an open hand immediately. Keep watching, and fix in your mind exactly what you saw and in which lane.

  4. 4

    Report to the referee

    After the heat, the referee asks what you witnessed. Describe it plainly, the stroke, the swimmer's lane, and the specific rule broken.

  5. 5

    Sign the slip

    If the referee confirms it, you both sign the DQ slip, and the reason is relayed to the swimmer's coach so they understand the call.

Your signal
Raised open hand
Who confirms
The referee, always
Benefit of the doubt
Goes to the swimmer, every time
The goal
Fair racing, not catching kids out
  • Completed your USA Swimming stroke-and-turn certification
  • Confirmed your assigned zone and turns with the referee
  • Watched a session alongside an experienced judge before going solo
  • Raised your hand only on violations you saw with full certainty

More resources

USA Swimming Officials

Certification paths, rule interpretations, and the Situations & Resolutions training docs.

Sources: USA Swimming Officials; USA Swimming Situations & Resolutions, Stroke and Turn