See main article: 1985 US Open (tennis).
Ivan Lendl defeated the defending champion John McEnroe in a rematch of the previous year's final, 7–6(7–1), 6–3, 6–4 to win the men's singles tennis title at the 1985 US Open. It was his first US Open title, following three consecutive runner-up finishes at the tournament, and second major title overall.
The seeded players are listed below. Ivan Lendl is the champion; others show the round in which they were eliminated.
John McEnroe (finalist)
Mats Wilander (semifinalist) Jimmy Connors (semifinalist) Kevin Curren (first round) Anders Järryd (quarterfinalist)
Yannick Noah (quarterfinalist) Joakim Nyström (quarterfinalist) Stefan Edberg (fourth round) Johan Kriek (second round) Tim Mayotte (fourth round) Henrik Sundström (first round) Scott Davis (second round)