The 1980 Cup Final was the 99th final to be played since 1872, and the 52nd to be played at Wembley since 1923. The tie involved Arsenal, who had played in the previous two FA Cup Finals and were a strong First Division side, and two-time F.A. Cup winners West Ham United, a Second Division side that had only ever played at Wembley five times before and were huge underdogs on the day.
The game started slowly with Arsenal playing their traditional defensive keep ball style of football. West Ham gained possession after Arsenal gave away a free kick due to Liam Brady being caught offside. After this West Ham maintained possession, frustrating Arsenal before Alan Devonshire broke down the left wing in the 12th minute, hitting a cross into the Arsenal box which fell to David Cross, whose shot was blocked by Arsenal’s Willie Young. Stuart Pearson then shot at the Arsenal goal but his shot went across the goalmouth, where England international Trevor Brooking was the fastest player to react; with the Arsenal defence stranded he flicked a header past Jennings for the only goal of the game after 13 minutes.
Arsenal and West Ham both had attacks during the rest of the first half, Arsenal having more of the game as had been anticipated, but Phil Parkes and the West Ham defence held firm and they were unable to unlock the West Ham defence. The second half was again mainly Arsenal in possession, but the underdogs held out and almost made it two with minutes remaining. Paul Allen was through on goal with only Pat Jennings to beat, Young tackled the 17-year-old, taking him down just outside the penalty box. It was a challenge from behind on the then youngest ever player to play in an F.A. Cup final, however Young only earned himself a yellow card (the professional foul rule had not yet been instituted).
You can watch the full match below: