USTA JTTLogo 
USTA Junior Team Tennis (JTT) is the largest national youth tennis league (ages 6-18) and is played in all 50 states. Juniors are divided into five age groups, and three skill levels. At the youngest levels a different type of ball (QuickStart) is used. At each level the scoring structure may change to fit the skill level and endurance of the players. (click the logo for more information and enrollment)
 
YouthTennisFortWorth website