i've been close to multiple ones a couple of times, but i've only ever had one in a round.
i don't remember the score, but one of them came on the 16th hole of a tournament. a very short par four with a heavily guarded, almost impossible, green to hit that is probably smaller than most of the tee-boxes. faded a 3-iron over the bunkers and around the trees to about 6 inches. ended up wining the tourney by a stroke.