Nothing physically special, except good eye sight and a very good knowledge of the rules of tennis.
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.
=it keeps your fitness at a high level and is a good social event=
snorkeling
snorkeling
snorkeling
Bowling, darts, golf etc.
yup your right buddo
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.
Bowling. Mini-Golf.
Wii Sports has tennis, Baseball, Bowling, golf, and boxing. You can also play training modes to improve your skills and a Wii fitness test to see your skill level. The Wii fitness test shows your stamina, balance, and strength.
Professional-level certification can be obtained through the United States Professional Tennis Association (USPTA). Many tennis teaching jobs require USPTA certification.
American football, Basketball, Baseball