At grassroots level, 3x3 can be played anywhere; court markings –if any are used –shall be adapted to the available space; however FIBA 3x3 Official Competitions must fully comply with the above specifications including backstops with the shot clock integrated in the backstop padding. Start of the game: 3on3 basketball starts with a coin toss. The team that wins the coin toss gets to decide whether it Game time and overtime: A 3on game lasts 10 minutes, unless one team manages to score 21 points before that time has Check ball: After each interruption (ball out of bounds, I. THE GAME 3 on 3 Basketball is a half-court game played by two teams of three players each, including a maximum of three substitutes. Only players who are listed on a team’s roster form may play. No alternate or pick-up players will be allowed after the first 2 regular season games. 3WUs8yF.