Ljubicic powers past Djokovic at Indian Wells

Novak Djokovic tumbled out of the tournament, upset 7-5, 6-3 by big-serving Croatian Ivan Ljubicic in the fourth round.

Novak Djokovic of Serbia reacts after losing a  point against Ivan Ljubicic of Croatia during  their match at the Indian Wells ATP tennis  tournament in Indian Wells, California, March  17, 2010.REUTERS/Danny Moloshok (UNITED STATES  - Tags: SPORT TENNIS)

The Serbian world number two, champion in 2008, lost his serve in the sixth game of the second set and sent a forehand service return long to hand Ljubicic victory.