[bob jenkins]

Originally posted by Mark Dexter
I think the difference is probably one part training (as Mick said) both of timers and of officials. One part three-person mechanics (it's easier for someone to look at the clock when you have three on the floor), and one part equipment (HS clocks, even if they show 1/10th's are rarely mounted in an easy to see spot such as above the backboard).

Separate Q: in NCAA, the clock is reset to the original time in this play. What if less than 1 second runs off the clock? Is there any reset? (I.e. whistle at 4.5, clock stops at 4.0).

Yes -- reset it to 4.5 in NCAA