Mark Studer,
Shortly after Gary Groh did it, an amateur, who happens to be a terrific young man, Peter Kapsimalis Jr. hit the green in two.
I'm told that some have hit # 16 at Pine Tree in two from the back tee at 666 yards, but I've never heard of anyone hitting
# 5 in two from the back tee at 610 yards.
Perhaps it's because of the prevailing winds, bunkering complexes and the elevated and well protected nature of the much smaller 5th green that has impeded same. Then again, perhaps some have hit it, but I haven't heard of it.
If no limits are put on distance, in three years this thread will be amended to read, "Unreachable Par 4's"