Issue link: http://itf.uberflip.com/i/237831
1 Seven (7) Line Umpires a The sidelines and centre servicelines are covered by four (4) standing Line Umpires. b All sidelines are called only up to the net. c Serves are called from the receiver's end and the centre serviceline Umpire returns to the non-covered sideline after the serve is put into play. d There is movement during the point. e The responsibilities for a seven (7) Line Umpire crew shall be as shown above. 2 Six (6) Line Umpires a The sidelines and centre servicelines are covered by three (3) standing Line Umpires. b The side serviceline is called through the net from the server's end and the centre serviceline is called from the receiver's end. c There is no movement during the point. d The responsibilities for a six (6) Line Umpire crew shall be as shown above. 3 Five (5) Line Umpires a The sidelines and centre servicelines are covered by two (2) standing Line Umpires. b The assignments are the same as for the six (6) Line Umpires, except that the centre serviceline Umpire shall move to the non-covered sideline after the serve. c There is movement during the point. d The responsibilities for a five (5) Line Umpire crew shall be as shown above. 4 Less than five (5) Line Umpires a The Chair Umpire shall assign the Line Umpires to the best advantage possible. b The Chair Umpire shall call all non-covered lines. c The responsibilities shall be as shown above. Diagrams showing the location and movements for seven (7), six (6) and five (5) Line Umpires are shown in Appendix D. N UMPIRING WITHOUT LINE UMPIRES If a Chair Umpire is required to umpire a match without any Line Umpires, then the Chair Umpire must make all calls. O PROCEDURES FOR MATCHES PLAYED WITHOUT A CHAIR UMPIRE Procedures for ITF Supervisors/Referees and a Player Notice for matches played without a Chair Umpire can be found in Appendix E. P HINDRANCE 1 Hindrance by Officials a If the call is corrected from "Out" to "Good", then a Let must be played unless the Chair Umpire in his/her sole judgment determines that it was a clear ace or a clear winning shot that the player could not possibly have 23