Clock reads 0:00

[Raymond]

• Rule 6-2 When play is resumed with a throw-in or free throw and 3/10 (.3) of a second or less remains on the clock, no field goal may be scored by a try for goal. In this situation a tap could score. [/FONT]
• NOTE: This rule does not apply if the clock does not display tenths of a second.

So what is the purpose of the note in the rule? Can someone please give an example of when we would have knowledge that less than 3/10 of a second remained but this rule does not apply if the clock does not display tenths of a second.