World No 1 and record 24-time Grand Slam champion Novak Djokovic will not play at the Madrid Open this week.
Media reports said the 36-year-old Serbian star had pulled out of the tournament and he was not included in the draw on Monday.
The 36-year-old is yet to win a title this season and has only played in four tournaments this year, having decided to lighten his schedule.
Veteran tennis great Rafael Nadal will continue his comeback from injury in Madrid and has been pitted against 16-year-old American Darwin Blanch in the first round.
Djokovic has now pulled out of the Madrid Open three times in four years.
The Serbian could still appear in Rome at the Italian Open before defending his French Open title from May 26.
