The Women's Tennis Association Tour plans to install an electronic line calling system at tournaments next year, possibly before the grand slams do so.
WTA chief executive officer Larry Scott said: "We've been testing the systems and they have been better than 90 per cent accurate, which is better than the human average."
The WTA has tested two systems, the British-based Hawk-eye ball tracking system, which has been approved by the International Tennis Federation and the Canadian-based Auto Ref system.
Top-ranked Lindsay Davenport said the tour should leave the control of matches to umpires.
Tennis: WTA goes electronic
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