No 1 ranking not a burden for Nadal

Rafael Nadal insists the No 1 ranking is not a burden as he prepares to come under pressure to stay at the top.

The Spaniard reached the last 16 of the Miami Open with a 6-3, 6-3 win over compatriot Feliciano Lopez. He has a mountain of ranking points to defend in the coming months, but Nadal is not troubled by the challenge. "I don't feel that I have to defend the points," he said. "I feel in every tournament that I am going to play I have the chance to win points, not to lose points."