How do you use negative numbers in golf?

Answer 1

On the professional Golf tours and high ranking amateur events, negative numbers are used to indicate the amount of strokes under par, for the amount of holes played.

-3 (14) Means the player is 3 shots under par, and they have completed 14 holes. Professional golf tournaments are normally 4 rounds. So if this was the third round, the player would be 3 under for the week, and has just completed the 14th of his third round.