Ball-tracking technology will be used to make line calls at the Masters Tennis at the Royal Albert Hall from 29 November to 4 December. The Hawk-Eye machine has been used as a TV aid for the past three years.
But it will now be used by umpires to help with disputed line calls, a move welcomed by John McEnroe.
"I'm all for it, it's about time it was introduced," said McEnroe. "Once again the Champions Tour is leading the way in innovations in the tennis circuit."