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*Unless otherwise agreed upon by WTA and ATP for combined events. 

(1) A minimum of one (1) experienced and certified Review Official (minimum Bronze Badge) will be designated by the WTA Officiating Department at Tournaments implementing an Electronic Line Calling System. The number of review officials needed for each event will be based on the number of courts (with a minimum of one (1) per court with ELC) and the match schedule plan, especially when night sessions are held. 

(2) In addition to the designates, the Chief of Umpires will recruit a sufficient quantity of additional Chair Umpires based on the following guidelines: (i) minimum White badge for Qualifying at WTA 250 Tournaments and minimum Bronze Badge for Qualifying at WTA 1000 and WTA 500 Tournaments; (ii) minimum Bronze badge for Main Draw at WTA 1000 and WTA 500 Tournaments; (iii) a minimum of two (2) additional Silver badge or higher available for Qualifying and Main Draw at WTA 1000 and WTA 500 Tournaments; and (iv) a minimum of two (2) additional Bronze badge or higher available for Qualifying and Main Draw at WTA 250 Tournaments. Green Badge, National, and uncertified Chair Umpires are not approved to work at WTA Tournaments. 

f. Chairs – Chair Umpire 

The Chair Umpire’s Chair is recommended to be a minimum of six (6) feet (1.82 meters) and a maximum of eight (8) feet (2.44 meters) in height. The chair shall be centered along an extension of the net approximately three (3) feet (0.9 meters) from the net post. The chair must be stable and safe. 

The Chair Umpire’s microphone must have an on/off switch and must be easily adjustable and not hand held. If the Chair Umpire’s microphone has a flag, the WTA Logo is the only permitted branding. The on-court announcer’s microphone, if any, also must have an on/off switch. 

For outdoor Tournaments, the Umpire’s Chair on all courts shall be positioned on the west side of the court, unless otherwise agreed by the WTA, and there should be a sunshade available. Each Chair Umpire’s chair 

