ROME, ITALY - MAY 21: Novak Djokovic of Serbia plays a shot against Alexander Zverev of Germany during the final of The Internazionali BNL d'Italia 2017 at Foro Italico on May 21, 2017 in Rome, Italy. (Photo by Gareth Copley/Getty Images)

Former world No.1 Novak Djokovic has announced former top-1o Czech player Radek Stepanek will join his coaching team in 2018.

“Radek is one of my very close friends on the tour and I was always impressed with his level of determination, passion and love for the sport,” Djokovic wrote via Instagram.

“The fact that he just recently retired at the age of 37 speaks volumes of his love for the game. He has lot of experience and knowledge, and he has played on a high level for many years.

“I am excited to join our forces together and cannot wait to compete again having a new team to back me up.”

Stepanek will join American legend Andre Agassi on Djokovic's team.

"I am sure the two of them (Agassi and Stepanek) will work well together,” Djokovic added.

“The new season is about to start and there is a long way to go back to where I left off. We are aware that I need to go step by step, not hurrying anything. I feel much better now, and I can’t wait to play matches again.”

Djokovic has not played since Wimbledon due to an elbow injury.