After mastering the Red stage, children move on to the Orange stage where the ball bounces a little higher (50% compression) and the court is a bit bigger. Orange players play over the regular net on a three quarter length court. Court size: 6.4 m × 18.29 m Tennis ball: orange ball (50% compression) Recommended racquet size: 23–25 inches The ball used in the Green stage has a higher compression than the Red and Orange stages (75% of a yellow tennis ball) and children play on a full-size court. Green players may be older children who are new to tennis or players of a good standard who have progressed through the Blue, Red and Orange stages. Court size: 10.97 m × 23.78 m (full court) Tennis ball: green ball (75% compression) Recommended racquet size: 25–27 inches