line umpire
Court edge judge
A line umpire is an official in tennis, badminton, or similar court sports who watches a specific boundary line and calls whether shots land in or out.
Multiple line umpires work each match, each responsible for a single line, reporting to the chair umpire who has final authority: The line umpire signaled the ball was out.
Sideline sports official
- refereeSports rule enforcer
- adjudicatorOne rendering formal decisions
- arbiterOne who settles disputes
- judgeOne who decides
official · monitor · supervisor · overseer · enforcer · validator · assessor · scrutineer
linesman
Sideline sports official
- refereeSports rule enforcer
- adjudicatorOne rendering formal decisions
- arbiterOne who settles disputes
judge · official · monitor · supervisor · overseer · enforcer · validator · assessor · scrutineer · call
baseline
Standard for comparison
in · let · ace · serve · rally · volley · forehand · backhand · deuce · advantage
line umpirechair umpire
Match official on platform
umpire · referee · supervisor · replay official · player
line umpireplayer
Game participant
competitor · tennis player · athlete · contestant · ball kid
line, umpire, lines, lined, lining, liner, liners, linear, lineage