I have just been watching Serena Williams vs. Jennifer Capriati from the US Open 2004. In the first game of the 3rd set, the absolute worst line call I've ever seen occurred. The ball was a mile inside the line, not even on the line, and it was called out, eventually causing a break of serve.
Can any of you recall some of the worst calls you've ever seen, ideally pointing towards video clips if they exist? I'm curious to see if any call exists that will outdo the one I just described, above.
That's definitely the worst call I've seen on TV. Remember that the linesperson called it correctly; it was the utterly incompetent chair umpire who overruled the correct call, and didn't umpire again that tournament. Worst overrule in history, and played a large role in the implementation of Hawkeye.