Novak Djokovic has admitted that his semi-final win over Juan Martin del Potro at the Dubai Championships was "challenging".
The world number one took the first set 6-3 against the Argentine before edging through a second-set tie-break 7-4.
"His serve is very powerful," said Djokovic. "His forehand from the back of the court he can do anything with - I needed to stay in it when I was a break down.
"I played a poor game when I needed to close it out but he's a great player, so it was always going to be challenging."
Djokovic will take on third seed Tomas Berdych in Saturday's final following the Czech's surprise victory over Roger Federer.
Written by
Jack Prescott
Jack Prescott
