Junban Rotation

Junban takes the job the organiser normally does on a scrap of paper: dividing whoever turned up across the courts you have, pairing them differently each round, and making sure nobody sits out more often than anyone else. Tick who came, say how many courts and how long a match runs, and start. Junban does the rest. FAIR ROTATION Every round is drawn fresh and weighted so that resting is spread evenly. Sitting out more often than everybody else is the thing people mind — playing with the same partner twice in an evening is not — so an unfair rest outweighs any number of repeated pairings. Singles or doubles. One court or three. A CLOCK EVERYONE CAN HEAR All courts start together and one alarm ends the round. It plays at the media volume rather than the ringer, and it sounds even when the device is set to silent, so a phone propped by the net is actually heard in a busy hall. The screen…