Diablo Country Club is the place for recreation, rejuvenation and refining strokes. Expert instruction, leagues, mixers and clinics complement our 7 tennis courts, 5 of which have lights for night play. Our USPTA certified tennis professionals help you find the best ways to get started in the game of tennis or to get back into it if you've been away for a while. They can also help you fine-tune your game or get you involved with the various leagues and clinics available.