If you are in the search for the right ball to begin your games in a standard Tennis court that lets you take things slow and get used to the game, then the TIP III Tennis balls from Head are the best choice you can go for. This Head TIP Green 3 Ball is the perfect ball for kids between 9 and 10 years and starter adults about to transition to a full-size court. These are soft, pressureless balls that offer a slow, predictable bounce. These are slower than a standard ball and are ideal for adults just starting out or great practice balls for 9 to 10-year-olds. According to Head approximately 25% slower than a standard tennis ball.