Novak Djokovic has claimed that he is still trying to improve his game.
The world number one won the 36th title of his career on Saturday when he beat Tomas Berdych in the final of the Dubai Tennis Championships.
However, the Serbian has admitted that there is still room for him to improve.
"I haven't always been a player who loves to play on super-fast surfaces," ESPN quotes Djokovic as saying.
"I have been trying to work on a few things that can give me more variety in my game, and I can use that in the tournaments to come."
Djokovic will play at Indian Wells this week.
