First Look: Former great Vilas meets Nadal!

Spain’s tennis star Rafael Nadal had a surprise visitor during his training session on Monday.

The 12-times Grand Slam champion was visited by former Argentinian tennis great, Guillermo Vilas.

'Today we have been visited by the Big One #GuillermoVilas!' Nadal posted on his Facebook page with a picture of the duo.

Nadal is due to travel to Canada to play the Montreal Masters on August 5, before flying to the US Open scheduled for August 28.

Photograph: Facebook