Former world No. 1 Andy Roddick retired from tennis a decade ago and these day he serves as a tennis analyst and expert for Tennis Channel. Roddick is an American tennis legend as his resume includes a Grand Slam title and the world No.1 ranking. Roddick, who became a Grand Slam champion as a teenager at the 2003 US Open, was also a three-time Wimbledon finalist. This week, Roddick made an honest admission regarding his talent and how he was winning matches. Roddick was a poor clay court player but on hard and grass he was a strong force for pretty …