Issue link: http://itf.uberflip.com/i/237831
III INTERPRETATIONS A APPLICABILITY This Article is applicable to all events sanctioned or recognised by the ITF, unless otherwise specified. B INTERPRETATIONS Playing with Broken String(s) In professional tennis, a player may not start a point with a racquet with a broken string(s). If a player breaks a string(s) during the course of play he/she must complete that point. If the receiver breaks a string(s) when returning a let first serve, he/she must change the racquet immediately. If the receiver breaks a string(s) when returning a fault first serve, he/she can choose either to change the racquet immediately, in which case the server is allowed another first serve, or to finish the point with a broken string(s), in which case the server is allowed only the second serve. Pipe Support/Cameras under Net If a player touches the pipe support/camera, it is considered to be part of the net. If a ball touches the pipe support/camera it is considered to be part of the ground. Changing Wet Shoes/Socks If requested at the beginning of a change-over, a player is allowed reasonable extra time during the change-over to change wet shoes/socks, provided the new shoes/socks are prepared. This shall be granted only once in a match, unless the provisions for "Equipment out of Adjustment" take precedent (e.g. when the wet shoes/socks are making the court unplayable). In that case the Chair Umpire has the authority to decide each request on its own merit. Chair Umpire Blocked on Question of Fact When the Chair Umpire has the primary responsibility for a call (not-ups, touches and nets/throughs if no net-umpire) he/she must make the immediate decision. If the Chair Umpire does not see one of these rule violations, then no violation has taken place and the point must stand. Contact Lenses and Glasses If a player is wearing contact lenses or glasses at the beginning of a match, these are considered necessary equipment and the player is therefore entitled to reasonable time if the lenses or glasses become out of adjustment (e.g. dirty lenses or broken glasses). However, players are not allowed reasonable time to choose to change from glasses to contact lenses or vice versa (when the equipment used is not out of adjustment). Electronic devices A player is not allowed to use any electronic devices, other than approved Player Analysis Technology (PAT), during matches, unless approved by the ITF Supervisor/Referee. 30