Juan Martin del Potro can't wait to get back to the US Open, scene of his breakthrough Grand Slam triumph in 2009, but first he'll try to take care of business in a return to US hardcourts at Los Angeles. "I am very excited to come back to New York," said del Potro, who didn't get a chance to defend his title at Flushing Meadows in 2010 after a wrist injury cut short his season. "If I could start to play tomorrow I would. First I have very important tournaments before. "This tournament it's important for me – it will be my first tournament after clay and grass season." The Argentinian is the second seed behind American Mardy Fish in the $ 619,500