By Emilio Sanchez Vicario The following article was posted with permission by Emilio Sanchez Vicario, the CEO and Founder of the Sanchez-Casal Tennis Academy (www.asc-florida.com) He was ranked No. 7 in the world in singles and No. 1 in doubles. Follow him on Twitter at @EmilioSVicario and his Sanchez-Casal Academies at @ASCFlorida and @SanchezCasal […]