Former world No. 1 Rafael Nadal is planning to return to the ATP tour for the Aug. 10-16 event in Montreal.

If that proves to be the case, Nadal will likely play in the Montreal and Cincinnati events and skip the Pilot Pen before heading to the U.S. Open. Pilot Pen tournament organizers figure to keep close watch on Nadal's progress because if he has any setbacks and doesn't return for the Montreal event, there is a chance he could request a last-minute wild card into the New Haven event.

Nadal has not played since losing to Robin Soderling at the French Open because of a knee injury.