Question: What is the Lowest 18-Hole Score Posted in the U.S. Open?
Answer: Four golfers have posted rounds of 63 in a U.S. Open, most recently Vijay Singh at Olympia Fields during the second round in 2003.
Two of the 63s came in the same round. During the first round at Baltusrol (Lower Course) in 1980, Jack Nicklaus and Tom Weiskopf shared the lead with 63s.
The most famous 63 shot in an Open is also the first, posted by winner Johnny Miller in the final round at Oakmont in 1973.
