Juan Martin Del Potro has committed to play at the AEGON Championships at Queen's Club for the next three years

The US Open champion, who is currently preparing for his opening match against Andy Murray at the ATP World Tour Finals in London, has a modest record on grass having been knocked out of Wimbledon in the second round for the past three years.

Del Potro, however, insists he hopes to improve his game on all surfaces as he bids to add to his maiden Grand Slam title at Flushing Meadows.

"I am determined to do well on grass in my career and this is the perfect opportunity for me to improve my game on the surface,'' the Argentinian said.