British number one Laura Robson is to work with veteran American coach Nick Saviano and Jesse Witten, the teenager's agent has confirmed.
Robson has been without a coach since splitting from Miles Maclagan last month and has been training at Saviano's academy in Florida during the off-season.
Robson worked briefly with 57-year-old Saviano as a junior and has since gone through a string of coaches, including Martijn Bok, Patrick Mouratoglou, Zeljko Krajan and Maclagan.
Saviano is unlikely to go to a lot of tournaments with Robson, who will instead travel with 31-year-old Witten.
The American, who will serve as both coach and hitting partner on the road, reached a career-high ranking of 163 three years ago, while in 2009 he made the third round at the US Open.
Saviano also coaches Robson's best friend Eugenie Bouchard and is expected to accompany the Canadian teenager to the big tournaments.
Next year will be a crucial one for Robson, who has seen the likes of Bouchard and American Madison Keys move past her to become the leading teenagers in the rankings.
Robson again performed well at the grand slams in 2013, making the fourth round at Wimbledon for the first time and the third round at both the Australian and US Opens.
The 19-year-old was seeded for the first time at a slam in New York but finished the season ranked 45th after disappointing results in Asia.
Robson has so far failed to produce her grand slam form on the regular WTA Tour, managing just one quarter-final in 2013 and losing in the first round nine times.
A lack of consistency both in terms of results and in her game remains the teenager's big weakness, while continuing to improve her movement is sure to be high on the priority list for Saviano and Witten.
Robson will begin her 2014 season at the ASB Classic in Auckland, which begins on December 30 this year.