OK, this makes absolutely no sense:

COMPUTER-generated video replays will not be used to monitor line calls at the US Open, the United States Tennis Association (USTA) announced today.

"The extensive testing conducted by the International Tennis Federation of various electronic line calling systems determined that the available technology does not yet meet the standards of accuracy and reliability for use as an aid to officials," a source close to the testing said.

"Therefore, the USTA has decided not to use it as an official aid at the 2005 US Open."

Last week the USTA Tennis Center in Flushing Meadows tested the Hawkeye system, a technology that is already employed by television broadcasters to monitor line calls.

But the source said the Hawkeye system and Auto-Ref - the other replay system the USTA tested earlier this year - were not accurate enough on balls that fell within five millimetres of the lines.

Everyone knows from seeing this in use on TV that there are lots of close calls that are obvious once the hawkeye is used. OK, so maybe not within five MILLIMETRES, but within centimeters and inches, certainly. Why can't it be used for those? If they are too close to call in the replay, the line judges can defer to the initial gut ruling. But this is a goofy reason not to adopt the technology.

Personally, I am generally against instant replay in all sports. Make the call, move on. I know there's 'a lot at stake' but so what? Refereeing is part of the game, warts and all.

Actually, I like the idea of seeing if tennis players can make their own calls on the honor system. Get rid of refs altogether. Wouldn't that be fun?