Former British No 1 and world No 4 Greg Rusedski is to coach one of Britain's brightest prospects, Kyle Edmund.
Edmund was an outstanding junior and has made encouraging progress under his Lawn Tennis Association coach Colin Beecher since moving up to the seniors.
Former US Open finalist Rusedski, who also works for the LTA, takes over with Edmund ranked No 292 in the world.
The pair previously worked together when Rusedski was captain of Britain's junior Davis Cup team.
Edmund earned his first call-up to the Great Britain Davis Cup squad for February's match with the USA, though he did not play.
Andy Murray is another admirer - the teenager trained with the Wimbledon champion in Miami during the off-season.
LTA chief executive Michael Downey welcomed Rusedski's appointment, telling the BBC: "I think this is great that this has happened. No disrespect to Colin Beecher, who did great work, but change sometimes should happen.
"I think it reflects very highly that not only did Kyle look for a change but that Greg wanted to step up and take on this challenge. Greg has stepped over the line, and said 'give me the keys'."
Edmund has played a lot of his tennis on clay and, having come through qualifying, beat fourth seed Aljaz Bedene in the first round of this week's Challenger tournament in Vercelli, Italy on Tuesday.
The 19-year-old, from Beverley in Yorkshire, won his first ATP Tour level match at Eastbourne last season with victory over France's Kenny De Schepper.
Edmund has won five titles on the Futures tour, the lowest level of professional tennis.