At the age of thirty five, the German opposed against Djokovic today never ceases to amaze with his longevity. Does he have a secret? The first explanation is named Carlos Costa. No, not the agent of Nadal, but a Portuguese namesake of twenty-six years old who is the physio of Haas. "He shadows me, always ready to take care of my body, " says the German veteran. It is also necessary that the body follows the proper treatment to deal with the high levels of stress of competition, especially at an advanced age. "My dose of physical training varies greatly, depending on the period and the goal", he said after his quick victory against Youzhny in the fourth round on Monday. "If it is two weeks without tournaments, then we must work hard in the gym everyday. During the tournaments, it's a different story. The regime focuses on massages, stretching, and other exercises to avoid injuries." Haas is reported to be a tough guy. "When in training, an almost daily intense workout of 1-1/2 to 2 hours is necessary. Any longer than that risks leading to burn-out." German by birth, Haas has also acquired citizenship in his adopted country. In Florida, where he now lives, he has found the ideal conditions to build this great union. "Wherever I go, it's full of great athletes and we do not miss competition. With good people, good music, it's easier to work. "We are heading to Bradenton for all those who like to suffer with a smile. But should he do more than his younger rivals? "I hope not", he replied the day before yesterday with a smile. Not so sure ...