Edgar Giffenig played for the University of Texas, completing degrees in business and exercise physio­logy. He was a national coach for the United States, Germany and Mexico, supporting the development of many future superstars including Mike and Bob Bryan.

Edgar is the author of Developing High Performance Tennis Players, a frequent speaker at international coaches' conferences and workshops and a consultant at tennisgate.com. He is a member of the International Tennis Federation Coaches Commission and an avid competitor, who in 2016 was ranked fifth in the 55 and over ITF world rankings.

Throughout his career Edgar has worked with hundreds of players of all ages from beginners to professionals. Currently he lives in Connecticut directing the Norfolk Country Club and is involved in coaching education worldwide.