The 1903 U.S. Open was the ninth U.S. Open, held June 26–29 at Baltusrol Golf Club in Springfield, New Jersey, west of New York City. Willie Anderson won the second of his four U.S. Open titles in a playoff over David Brown. The championship was played on the original course at Baltusrol, now known as the Old Course, which no longer exists. The Old Course at Baltusrol hosted the U.S. Open again a dozen years later in 1915, then was plowed under three years later in 1918 by course architect A. W. Tillinghast to create the Upper and Lower Courses.