One-on-one refers to a basketball game played between individuals. After World War II, one-on-one basketball tournaments proliferated.^[1] A usual basketball game consists of five-on-five. There is three-on-three, or even six-on-six.

Tracy McGrady's Ones Basketball League is a one-on-one basketball league.^[2]

Features of one-on-one basketball which may differ from a normal game include "make it take it", where making a shot is rewarded with possession of the ball instead of giving it to the opposing team.^[3] Also, when there is a change of possession, the player who just got the ball has to take the ball back behind the free throw line.^[4] Often times in one-on-one a player is expected to "check" the ball, meaning to start a possession by passing it to the opposing defender, who then passes it back.^[5]

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