I lost a game by fouling with 00:00 on the clock..you cant foul after a game ends. I am not arguing that you cant foul as time is expiring, but even then it should say 00:01 to show time is on the clock..   it is unfair to say 00:00 could mean a fraction of a second is left... if not as soon as the clock says 00:00 the game is over and a foul cant occur... any thoughts?

Check out this thread.  Same topic.  

Page 44: SECTION 6 BEGINNING, ENDING A QUARTER OR EXTRA PERIOD

Article 1: Each quarter or extra period ends when the signal sounds indicating time has expired

EXCEPTIONS

3. If a foul occurs so near the expiration of time that the timer cannot get the clock stopped before time expires or after time expires, but while the ball is in flight during a try or tap for field goal. The quarter or extra period ends when the free throw(s) and all related activity have been completed. No penalty or part of a penalty carries over from one quarter or extra period to the next, except when a correctable error, as in 2-10, is rectified. No free throw(s) shall be attempted after time has expired for the fourth quarter or any extra period, unless the point(s) would affect the outcome of the game.

So this means if a player releases a ball for a shot and while the ball is in the air, even after the buzzer has sounded, a foul can be commited  until the shot is either made or missed.  So that is at least a second PAST the sound of the buzzer that something can occur.

Or, the foul happens with 0.01 seconds and the clock operator can not stop it in time, the game would end on foul shots ONLY if the outcome of the shots can impact the game.