Ex-champ del Potro to miss US Open
Argentinian Juan Martin Del Potro returns a backhand against French player Paul-Henri Mathieu during the second round match of the ATP World Tennis Tournament in Rotterdam, on February 13, 2014 - by Koen Suyk
Del Potro's absence from the final Grand Slam of the year is not a surprise.
The Argentinian battled pain in his let wrist that first flared up at the Australian Open in January.
He retired from his opening match in Dubai in February and then withdrew from tournaments in Indian Wells and Miami, undergoing surgery in late March.
He has not played since.
Del Potro underwent an operation on his right wrist after winning the US Open in 2009 and missed much of the next season.