...
(golf) course
...
ball
...
(boxing) ring
...
field
...
draw
...
stick
...
(tennis) court
...
rod
...
beat
...
umpire
...
viewer
...
(ice) rink
...
spectator
...
track
...
referee
...
racket
...
opponent
...
cue
...
(football) pitch
...
competitor
...
bat