MATCH BALLS
In USA TENNIS TOUR matches, all matches will begin with one can of ITF approved tennis balls to begin their match.
If a tennis ball is lost, damaged, unpressurized, or unplayable or unsatisfactory to the players, the ball will be replaced with a new ball or a ball similar bounce height compared to the remaining balls.
New balls issued for final set play.
LATTER ROUND BALL POLICY
In semifinals and finals matches, new balls will be delivered and switched out every 9 games.
CLAY COURT EVENTS
Clay court events will always use soft court tennis balls and balls intended for use on clay.
HARD COURT EVENTS
Hard, indoor and other hard surface events will use extra duty or hard court tennis balls for all events.