World No. 4 Rafael Nadal won’t be kicking off his clay season next week as he has withdrawn from the Barcelona Open, according to his press team. Nadal, a former world No. 1, had been scheduled to make his 17th Barcelona appearance this year. Throughout his career, Nadal has had lots of success in Barcelona as he is a 12-time champion at the tournament. Nadal won five consecutive Barcelona titles between 2005 and 2009. Nadal skipped the 2010 Barcelona edition but returned to the event in 2011 and won th …