Originally Posted by Mike Y
People keep making comments about line judges being rare, but I see it happen somewhat often. I've probably seen a line judge in a match around 15+ times. I've been called as a line judge maybe 5 times, mostly lower level women's matches, where I just happen to be around and they need a line judge, so I oblige their request. That seems to be the best solution if someone is making bad line calls. And every single time I've been a line judge, the bad line calls miraculously vanish.
I've played USTA and local league tennis since 2005, hundreds of matches including local and state playoffs and I've never had a linesperson for a match. I think that my experience is not unique which is why people think it is rare to have one.