STANDARDS SECTION XVIII - TOURNAMENT STANDARDS OF PERFORMANCE vi. Determine if a court continues to be fit for play. If a change in  condition occurs during a match that the Chair Umpire considers  sufficient to make the court unfit for play or if weather conditions  require stoppage of play, the Chair Umpire should stop play and  immediately notify the Supervisor. vii. Give the result of the match to the Referee and Supervisor immediately  upon completion of the match and any action taken under the Code  of Conduct during the match. viii. If necessary, overrule a Line Umpire. He/She must do so when a  clear mistake has been made and must give a decision when a Line  Umpire is unsighted. ix.  Provide a detailed report on any Code of Conduct penalty issued in  connection with the relevant match(es). x.  Wear and use the officiating clothing, tablet, tablet holder, and  microphone provided by the WTA. Except for the WTA Logo, no other  commercial branding may be applied to the Chair Umpire clothing,  scoring tablet, scoring tablet holder, or microphone without the  WTA’s and the applicable Tournament’s prior approval. d.  Line Umpires i. Responsibilities (a)  Base, Side, Center Service, and Service Line Umpires call “Out”  and “Fault” for their respective lines. (b)  Base, Side, and Center Service Line Umpires call “Foot Fault” on  their respective lines. (c) The Net Umpire calls all net cord services and assists with  measuring the net and with ball changes. (d)  To give the recognized safe signal to acknowledge that a ball is  good. (e)  To give the recognized unsighted hand signal when their view  of the ball landing is obstructed. (f)  To correct their call immediately upon realizing they have made  a mistake. The responsibilities for Line Umpires shall be as follows: 330