And the man, that Roger overtook for the world number one spot -- Rafa Nadal is looking to get to 100-percent. The Spaniard is still dealing with an ongoing hip injury that forced him to withdraw from last month's Australian Open. The 16-time grand slam winner still not at his best and has decided to pull out of this week's Mexico Open.

RAFAEL NADAL PULLS OUT OF MEXICO OPEN "Yeah, a tough of course, yesterday in the last practice I felt something practicing with, and yes, I went to the hospital this morning to check it, to do an MRI. And I still have some liquid there so I need to keep doing tests to know exactly what's going on. The spot is really similar to Australia."

The world number two, was scheduled to face fellow Spaniard Feliciano Lopez on Wednesday, but he and his medical staff felt it best he not play, after Rafa said he felt a sharp pain in training. Nadal has not competed since retiring against Croatia's Marin Cilic in Melbourne last month. This marks the sixth tournament in a row that Nadal has pulled out of or retired from -- the Australian Open, Brisbane, London, Paris, Basel and Acapulco.