The Swiss agreed with the statement that Spanish is the "number one" and referred to land titles and the route of Nadal in the last five years in this area.
Roger Federer, said he had been too much "negativity" around the Spanish Rafael Nadal, which he said the Swiss, remains a "favorite."
The world number one said he went through a similar situation to that of Nadal, but highlighted the positive role of manacorense in the Monte Carlo Masters, where he was proclaimed winner to compatriot Fernando Verdasco 6-0 with a score of 6-1.
Asked if he believed that Spanish is the "number one" on earth, Federer agreed with the statement and referred to the tour title and Nadal in the last five years in this area.
Basel also recalled the great game of Spanish in the party that they faced in the quarter-finals in Qatar, and which ended in victory for Nadal, who finally ended the tournament just the hand of Nikolay Davydenko.
Federer said he came to Rome in great shape, much more "relaxed" than at other times, as it has been prepared in these last weeks to address this competition.
She also stressed that the road between Rome and Wimbledon is too long and needs to stay "fresh" for that final episode: "That is not where you want to be tired."