STANDARDS SECTION XVIII - TOURNAMENT STANDARDS OF PERFORMANCE (g) To report immediately to the Chair Umpire any breach of the  Code of Conduct. (h) To defer questions from players to the Chair Umpire. A Line  Umpire shall not enter into any discussions with players. ii.  Numbers of Line Umpires per Match The Tournament is required to provide the minimum numbers of  Line Umpires per match as listed in the table below. Where possible,  it is recommended the minimum number of Line Umpires per match  should be seven (7). Qualifying Main Draw through QF Main Draw SF and Finals 5 7 7 iii.  Clothing of Line Umpires e.  Standards of Officiating  Line Umpires may not wear any predominantly white, yellow or  other light color clothing that may interfere with the players’ vision,  unless otherwise approved by the WTA. Line Umpires’ uniforms  should not be identical to the ball persons’ uniforms. All officials must be certified and approved by the WTA. The WTA  will hire and designate the internationally certified Chair Umpires and  Review Officials for all Tournaments. Each Tournament is required to  provide additional Chair Umpires (approved by the WTA) for Qualifying  and for some Main Draw matches not covered by the designated Chair  Umpires hired by the WTA. The Tournament Directors, in agreement  with the Officiating Department, will hire a Referee and Chief of Umpires.  Following are the minimum required Standards of Officiating for each  level of Tournament:* Tournament Category (Singles Draw Size) Referee Chief of Umpires Designated Chair  Umpires (1)(2) WTA Finals (8 draw) 1 Gold 1 Gold 4 WTA Elite Trophy (8 draw) 1 Gold Recommend 1 Gold/ Minimum 1 Silver 3 WTA 1000 Mandatory (60/64 draw) 1 Gold 1 Gold 7 331