However, Wimbledon's greatest success during the season, perhaps in their entire history, came in the FA Cup, defeating West Bromwich Albion (4–1, home), Mansfield Town (1-2, away), Newcastle United (1-3, away), Watford (2–1, home) and Luton Town (2-1, neutral) to reach their first ever FA Cup Final, against that season's champions Liverpool.

Wimbledon took a lead in the 37th minute when Lawrie Sanchez scored a looping header from Dennis Wise's free kick on the left.

Liverpool created many chances, with Peter Beardsley finding the net but his goal being disallowed, but failed to pull a goal back, with Dave Beasant saving a penalty from John Aldridge after Clive Goodyear was (incorrectly) adjudged to have fouled inside the box; Beasant was the first goalkeeper to ever save a penalty in an FA Cup final at Wembley.

[1][additional citation(s) needed] Wimbledon's kit was manufactured by Spall and sponsored by Truman.

[3] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.