US Open looms large for fit-again Del Potro

With his frustrating wrist injury finally behind him and the US Open looming large next month, the smile is back on Juan Martin Del Potro's face as he prepares for this week's ATP event in Los Angeles.

The towering Argentine played just three tournaments last year because of an injured right wrist but all that is largely forgotten and he is excited to be back in form with the US hardcourt season ahead of him.

"It has been a very long while (with) my wrist injury but now I'm OK," former US Open champion Del Potro said while preparing for his opening match at the Los Angeles International.