The assist to turnover ratio is one of many basketball statistics used to evaluate the ball control and ball handling skills of a player. It is found by dividing the total number of assists a player has recorded in a game by the number of turnovers the player has committed in the same game. A turnover is counted when a player with possession of the ball loses possession as the result of a violation or an opposing player. An assist is recorded when the player passes the ball to another player who then scores.
This measurement is especially effective at measuring ball control, because a player who distributes the ball and gains assists without turning the ball over will have a high ratio. The opposite is true of players who turn the ball over more than they distribute it to their teammates for successful scoring opportunities.