Hamburg - Spain's Rafael Nadal continues to head the latest ATP men's tennis rankings issued by the ruling body on Monday.

The top ten remained unchanged for the second week in a row and although Nadal lost in the final of the ABN AMRO World Tennis Tournament to Andy Murray, he continues to hold a convincing lead from former number one Roger Federer.

Nadal has 14,510 points, while Federer stands on 11,000.

ATP top 10 as of February 16 (previous ranking in parenthesis):

"#" 1. (1) Rafael Nadal, Spain, 14,510 2. (2) Roger Federer, Switzerland, 11,000 3. (3) Novak Djokovic, Serbia, 9,010 4. (4) Andy Murray, Britain, 7,460 5. (5) Nikolay Davydenko, Russia, 4,955 6. (6) Andy Roddick, US, 4,510 7. (7) Juan Martin del Potro, Argentina, 4,350 8. (8) Gilles Simon, France, 4,015 9. (9) Fernando Verdasco, Spain 3,480 10.(10) David Nalbandian, Argentina, 3,395 "#" (dpa)