The 2018 United States Open Championship was the 118th U.S. Open, held June 14–17 at Shinnecock Hills Golf Club in Shinnecock Hills, New York, about eighty miles (130 km) east of New York City on Long Island; it was the fifth time the U.S. Open was held at this course. The USGA changed the playoff format in February, from a full round (18 holes) to a two-hole aggregate playoff. Previously, playoffs at the U.S. Open were 18 holes, followed by sudden-death, if needed. The last 18-hole playoff was in 2008, won by Tiger Woods on the first sudden-death hole.