I have been taking lessons for the past few weeks with a coach here in Texas, and I asked him about when I could start Lila playing the sport that I grew up loving. He said that 2 years old is a perfect age to get Lila used to swinging a tennis racket. He suggested that we use balloons as tennis balls to help her practice her swing. She LOVES to volley at the balloon and actually has pretty great form (for a 2-year old)! I can't wait until next year to get her actually on the court with real lessons!!