TENNIS PLAYERS can only visit the loo ONCE during a match – and will be punished if they take too long. A raft of strict new guidelines on toilet breaks have been sent to players by the ATP , the governing body of the men’s Tour, ahead of the 2022 season. It is understood umpires will limit bathroom breaks to one per player per match, lasting no longer than three minutes from the time they enter the facility. But stars can only visit the restroom at the end of a set and not during. Should anyone spend too long ‘on the John’ or admiring themselves in the mirror they will be potentially liable to time violations. Some players have been accused of using trips to the toilet as tactical weapons at crucial junctures in matches when they have been losing or need to curtail their opponent’s momentum. The biggest saga came during the recent US Open on day one when Greek Stefanos Tsitsipas was accused of ‘cheating’ by Andy Murray after he disappeared off court at various times during their marathon four-hour 49-minute first-round epic. The Athens ace had a lengthy toilet break at the end of the second set…