responsible for making the tournament draw in accordance with competition regulations. The making of the draw includes determining seeds and placing players and byes. The referee must then work with tournament organizers to schedule matches. This process has been made much easier in recent years with the introduction of computer programs that complete draw sheets and schedules based on online player entries and court availability. During play of a tournament, the referee is the sole authority on the suspension of play due to weather and other concerns. The referee is usually only seen on court during the administration of a medical timeout. Due to the complex regulations dictating medical timeouts the referee accompanies the medical trainer onto court. The referee is present to explain procedures and regulations to the player and trainer, and to time the timeout to ensure no extra time is given, as this would be construed as an unfair advantage. Chief umpire The chief umpire of a tournament "appoints and replaces or reassigns, when necessary, Chair Umpires, (and) Line Umpires..." Chief umpires are used primarily in large professional tournaments and are responsible for the recruitment and hiring of officials for the tournament. During the tournament, the chief umpire assigns umpires to courts, subject to overrule by the referee. The chief umpire also collects scorecards from chair umpires at the conclusion of the match and thus may furnish the media with any factual information they may request. List of current ITF Gold Badge chair umpires Women Eva Asderaki-Moore (Greece) Aurelie Tourte (France) Mariana Alves (Portugal, retired) Miriam Bley (Germany) Marija Čičak (Croatia) Louise Engzell (Sweden) Katarzyna Radwan-Cho (Poland) Paula Vieira (Brazil) Alison Hughes (formerly Lang) (Great Britain) Juan Zhang (China) Marijana Veljović (Serbia) Cecilia Alberti (Italy) Julie Kjendlie (Norway) Kelly Thomson (Great Britain) Men Mohamed El Jennati (Morocco) Jake Garner (USA, retired) Roland Herfel (Germany, retired) Emmanuel Joseph (France) James Keothavong (Great Britain) Mohamed Lahyani (Sweden) (Chair umpire for the Isner–Mahut match at the 2010 Wimbledon Championships, the longest match ever played on a professional tour.) Pascal Maria (France, retired) Gianluca Moscarella (Italy) (2010-2022) Nacho Forcadell (Spain) Cédric Mourier (France, retired) Fergus Murphy (Ireland) Nico Helwerth (Germany) Timo Janzen (Germany) Ali Nili (USA, retired) Richard Haigh (Great Britain) Kader Nouni (France) Carlos Ramos (Portugal) Damian Steiner (Argentina) (2005–2019, retired) John Blom (Australia) Tom Sweeney (Australia) Renaud Lichtenstein (France) Arnaud Gabas (France) Pierre Bacchi (France) Greg Allensworth (USA) Jaume