Summary of NBA Basketball Rules



NBA basketball rules are different from WNBA and NCAA rules.

1. Length of game: Four, 12 minute periods
2. Overtime: 5 minutes
3. Duration between periods: 130 seconds
4. Length of halftime: 15 minutes

5. Court length: 94' x 50'
6. Size of lane: 16' x 19'
7. 3 point FG distance: 23' 9" (22' in corner)

8. Shot clock: 24 seconds
9. Shot clock reset: FG attempt hits rim
10. Back court violation: 8 seconds

11. Player foul limit: 6
12. Bonus Free Throw: 5th foul per period (one-and-one)
13. Number of players permitted on free throw lane: 5 (three defense, two offense)
14. Jump ball: yes
15. Legal alley-oop: yes
16. Touch ball on or above cylinder: no
17. Closely guarded for 5 seconds: no
18. Number of referees: three


19. Timeouts: 6 full and one 20 second per half
20. Timeouts-overtime: 3 full additional
21. Timeouts called by: Player in game
22. Size of basketball: around channels-29 1/2" to 29 3/4", across channels-29 5/8" to 29 7/8"
23. Legal jersey numbers: all numbers

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