Historically, some junior players will turn professional at the age of 16 like Andre Agassi or Pete Sampras.
The USTA runs their own circuit of junior tournaments at sorted into different age groups.
Some non-US citizens are also allowed to compete, such as those living in the US for asylum or with refugee status, or children of diplomats.
[4] In addition, a player is allowed to compete in an age division until the month of their birthday in which they age-out (such as turning 17 and no longer being 16 and under).
[7] The USTA posts summarized rankings multiple times a year, but uses a weekly standings list to determine entry into tournaments.
They also provide point rewards for certain international tournaments, such as the Junior Grand Slams.
Recent notable former USTA junior players include Francis Tiafoe, John Isner, Sloane Stephens and Madison Keys.
Juniors may earn income through tennis by participating on the Futures, Satellites or Challenger tours.
They are, in calendar order, the Abierto Juvenil Mexicano, Copa Gerdau, Trofeo Bonfiglio, Osaka Mayor's Cup, and the Orange Bowl.