Instant replay very likely at ‘06 U.S. Open

Instant replay probably will be used at next year’s U.S. Open to resolve disputed line calls.
Tournament committee member Jim Courier put the chances of the Open using the technology at “90 percent,” and said implementation of the replay is overdue in the sport.
Hawk-Eye uses cameras to track a tennis ball’s trajectory to help check disputed line calls. It’s been used in television broadcasts but not as an officiating aid. - MSNBC