Fault
yes.
Tennis starts when the umpire says and ends when the umpire says and when the sat lady sings
An Umpire :)
He or she may challenge it to the chair umpire if challenges are available...
The Chair Umpire may have up to ten assistants also called Line Umpires in tennis games.
The tennis match could not continue because the umpire was sick
Umpire
He quit the tour and was for a while heading the Portuguese tennis federation's umpire association. He is now a trainer in Luxembourg Petange and a Player
I think a level of fitness you need is to do a lot of practical sports in order to be a qualified tennis lime umpire.
George Washington.
Serena Wiliams
referree