At the 1985 U.S. Open, on the South Course at Oakland Hills Country Club in Bloomfield Hills, Michigan, North found himself two shots behind Taiwan's Chen Tze-chung going into the final round, but three shots clear of the rest of the field. Chen moved into a four-shot lead early, but threw the tournament wide open by shooting a quadruple bogey eight on the fifth hole. The lead swung between North, Chen, Denis Watson, Payne Stewart, and Dave Barr, who had surged into contention, but North went into the last hole with a two-shot lead, and his bogey five was enough to give him a second major championship.