A ten-second count continues when the defense deflects or bats the ball in the backcourt. When a dribbler is advancing the ball into the frontcourt, the ball maintains backcourt status until both feet and the ball touch entirely in the frontcourt.
During a throwin, even under a team’s own basket, if the throwin is deflected, tipped, or batted by an offensive player in the frontcourt to an offensive player in the backcourt; or after a missed field goal attempt, or a missed foul shot attempt, if the ball is deflected, tipped, or batted by an offensive player in the frontcourt to an offensive player in the backcourt; these are not a backcourt violations.
During a throwin, or jump ball, any player; or a defensive player, in making a steal; may legally jump from his or her frontcourt, secure control of the ball with both feet off the floor, and return to the floor with one or both feet in the backcourt. The player may make a normal landing and it makes no difference whether the first foot down is in the frontcourt or the backcourt. These three situations are not backcourt violations.