Boris Becker has struck a new deal to remain coach of world number one tennis player Novak Djokovic, the German icon revealed in an interview with sports daily Bild on Friday.
"We have a written agreement, even if for sportsmen like us, a handshake is enough," said the 43-year-old who has been Djokovic's main coach since December 2013.
"Our partnership has been crowned with success these past 12 months and I'm delighted to continue our work with the whole team," added the triple Wimbledon champion, who when asked how long the deal was for replied; "As long as the results are there."
Under Becker's guidance, the 27-year-old Djokovic has won six titles in 2014, including a second Wimbledon success, after 2011, and now stands on the brink of finishing the year as world number one heading into next week's ATP World Tour Finals in London.
According to Becker, retaining the number one spot has been their main priority while the French Open title is the only Grand Slam still eluding the Serbian.
The seven-time Grand Slam winner has a healthy lead over world number two Roger Federer heading to the English capital where he triumphed last year for the second time.