Line Umpire
A line umpire stands at ready position, focusing on his assigned line.
The Line Umpire "calls all shots relating to the assigned lines." Line umpires work on court as part of a team of between one and nine line umpires. Each line umpire is assigned by the chair umpire to one line or, in the case of a short handed crew, a position in a system. For example, a line umpire on the receiver's side may have to cover the center service line then, following the serve, move to one of the sidelines. Line umpires are a requirement for professional tennis games.
The line umpire signals a ball out by making a verbal "out" call followed by the extension of the arm shoulder high in the direction the ball was out. A ball is signaled "safe" or "good" by holding both hands together knee high in front of the body.A line umpire who is unsighted and thus unable to call a shot (usually because a player obstructs his/her view) signals this by holding his/her hands beside his/her head, the upper side pointing in the same directing as the eyes; that call is then the chair umpire's responsibility
Yes, they have several. Such as, Chair Umpires and Line Umpires.
The Chair Umpire may have up to ten assistants also called Line Umpires in tennis games.
by their ranking
Well, if by 'referee' you don't really mean 'line umpire' or 'chair umpire', then I would say around 10k for the tournament depending on the level (there are deputy referees and then the head/tournament referee). line umpires make in the mid-100's range per day. For chair umpires, it depends on what level they are.
Pat M. Riley has written: 'A handbook for umpires' -- subject(s): Tennis
you throw a ball and the one has got catch i t with a tennis racket
There are six umpires working a World Series game ... one each at home plate, first base, second base, third base, left field foul line, and right field foul line.
In intermediate tennis, you judge yourself. In professional tennis, there is a line judge. The line judge call outs, lets, and keeps score.
An alley in tennis is the area between the single's line and double's line.
There are three types of officials or umpires on the AFL field; the Field umpires, Boundry umpires and Goal umpires. There are 3 Field umpires 1 that patrols the forward line, 1 for the Centre, and 1 for the Back line. These umpires are in charge of general play and controling the game. There are also 4 Boundry umpires that patrol the boundry line around the oval. These umpires are in charge of unbiasly returning the ball to the feild of play after the ball has gone out (not directly from a kick out on the full or a deliberate attempt to remove the ball from the feild of play, although both of those descisions are left to the boundry umpire to judge). Finally, there are 2 Goal umpires, one for each set of goals that stand at the goal post at each end of the feild, these umpires keep score sheets, and decide whether a team has scored a goal (6 points), a behind (1 point), a rushed behind ( 1 point to the opposing team), or put the ball out of play ( in which case the ball goes at the descression of the boundry umpire.
the second line from left or right
yes