The Dominator will be a Top 10 mainstay for a decade.
The Argentine engineered his first comeback from two sets down at a major to defeat Dominic Thiem and reach the quarterfinals.
Quarterfinal opponents are dissimilar, says top seed.
The Spaniard is happy to have reached the second week in New York, and eager to get to Asia.
"I always wanted to be young," confesses 31-year-old Spaniard.
Lacoste and Tecnifibre will officially join forced on October 1st.
World No. 1 powers into second straight US Open quarterfinal.
