Dubai, UAE - Novak Djokovic survived a fright to join Andy Murry with a win into the quarter-finals of the Barclays Championships on Wednesday as he overcame determined Czech Jan Hernych 6-3, 3-6, 6-4.
The challenger, who won just four matches on the ATP last season, gave the top seed a battle before Djokovic pulled through.
"He put up a great fight and had nothing to lose. You can't always perform at your best but it's important to stay focussed. I was able to do that tonight," said the winner.