The Spaniard tennis player Rafael Nadal, the American Andy Roddick and the Argentinean Agustín Calleri, who conquered to the Peruvian Luis Horna, they debuted Monday with success in the Australia Open, the first Grand Slam tournament of the year.

Also they advanced to the second round of the tournament in the Melbourne Park, the Russian Nikoly Davydenko, the Chilean Paul Capdeville, the Colombian Alejandro Falla and the Spaniard Tommy Robedro, who needed four hours to conquer to the German Mischa Zverev.

Nadal, second tournament's pre-classified behind the defender champion and world's number one , Roger Federer, survived to an early test to winning for 7-6 (7-3), 7-5 and 6-1 to the Serbian Viktor Troicki.

Without showing agitation symptoms, Troicki, who is located in the position 126 of the world ranking, forced a point for set being 6-5 in the first time and came to head for 4-2 the second before Nadal recovered in a cold night in the Rod Laver stadium. The Serbian stemmed from the classification, in his first experience in a Grand Slam.

"He played in a very, but very aggressive form", commented the Federer in an interview in the field, after his victory in two hours and 35 minutes of a hard game. "Today I had complications in some moments of the game. I could not find the rhythm to the beginning, but I believe that in the third set I played a little better", added. Now, the world's number one will be measured with the French Florent Serra.

Roddick, series' sixth place, beat to the Czech Lukas Dlouhyfor 6-3, 6-4 and 7-5, in the meantime Davydenko, fourth place in the series, defeated to the French Michael Llodra for 7-5, 7-5 and 6-3. The next rival of the Russian Davydenko will be another French player, Nicolas Mahut, who defeated for 7-6 (7-2), 5-7, 6-2, 3-6 and 7-5 to the Argentinean José Acasuso.

Calleri, in the meantime, won to Horna for 6-4, 6-7 (6-8), 6-3 and 6-4 in a sorrow of South American tennis players Calleri, in the meantime, won to Horna for 6-4, 6-7 (6-8), 6-3 and 6-4 in a sorrow of South American tennis players and now will face to the Austrian Stefan Koubek, who conquered to Spaniard former world's number one Carlos Moya, the sixteenth pre-classified, for 7-6 (7-5), 6-7 (2-7), 7-5 and 6-4.

On the other hand, the Swiss Federer will began Tuesday the defense of his title, when will meet to the Argentinean Diego Hartfield in the main field (Rod Laver). The world's number one search to conquer his Grand Slam crown and his first encounter will be against a tennis player located in the position 107 of the ranking.

Meantime, The former champion Marat Safin, of Russia, the Australian Lleyton Hewitt, the Serbian Novak Djokovic and the Chilean Fernando Gonzalez -finalist last year- also they will enter action in the second day of competence of the tournament in which distributes 18.36 million dollars in prizes.