The 1899 U.S. Open was the fifth U.S. Open, held September 14–15 at Baltimore Country Club in Baltimore, Maryland. Willie Smith won his only major title, a record eleven strokes ahead of three runners-up. On Thursday, Smith and future four-time champion Willie Anderson co-led with 77 in the morning and Anderson took the lead in the afternoon at 158, with Smith a stroke back. In the third round on Friday morning, Anderson's 85 allowed Smith to take a four-stroke lead over Alex Campbell, and his 77 in the afternoon distanced him from the field; Campbell ballooned to 94 and fell to twelfth.