Look up an image:
Explore by theme
court 
Rectangular surface (23.77 m x 8.23 m for singles, 23.77 m x 10.97 m for doubles) designed for playing tennis; it is divided in half by a net.
center line judge
Official who signals center line service faults and informs the umpire when the server commits a fault.
pole
Vertical pole that stretches the net by means of a net band, keeping it 1.07 m above the court.
doubles sideline
Line that marks the sides of the playing area for doubles matches (two teams of two players).
service judge
Official who signals service line faults and informs the umpire when the server commits a fault.
center mark
Broken line marking the middle of the baseline; players use the center mark to take position for serving or receiving.
ball boy
Person who retrieves balls from the court after each rally in a tournament.
alley
Band that is 1.37 m wide on the sides of the court; the alley is used only for doubles matches.
umpire
Official responsible for applying the rules; the umpire ensures that the match runs smoothly and rules on contentious points.
receiver
Player who returns the ball put into play by the server.
linesman
One of the officials who ensure that the ball remains inside the lines of play and inform the umpire when a player commits a fault.
net judge
Official responsible for calling net serves; the net judge also regulates net height before and during a match.
center strap
Strip of fabric connected to the ground in the center of the net; it keeps the net at regulation height (0.914 m).
net band
Strip of fabric with a cable passing through it; it is attached to poles to suspend the net.
right service court
Zone in which the serve must bounce; it is diagonally opposite the server.
net
Loosely stitched divider stretched across the middle of the court; players must hit the ball over it.
singles sideline
Line that marks the side of the playing area for singles matches (two players).
service line
Line on each side of the net and parallel to it at a distance of 6.4 m; it marks the back boundary of the service courts.
baseline
Line marking the end of the court; the server stands behind the baseline.
server
Player who puts the ball into play; the server and receiver must stand in diagonally opposite zones.
left service court
Zone in which the serve must bounce; it is diagonally opposite the server.
backcourt
Zone between the service line and the baseline.
forecourt
Zone between the net and the service line.
center service line
Line dividing each forecourt in half.
