3rd May 1975 Scottish Cup Final Celtic 3 Airdrie 1
In season 1974/75, for the first time in ten years, Celtic did not win the Scottish First Division title. In fact, they finished third, four points behind Hibs in second place and eleven adrift of winners Rangers.
Celtic did win the League Cup beating Hibs 6-3 in the final but disappointingly went out to Olympiakos of Greece in the first round of the European Cup, losing 1-3 on aggregate. In the Scottish Cup, they also enjoyed success, beating Hibs 2-0 at Easter Road in the third round; Clydebank 4-1 at Celtic Park in the fourth; Dumbarton 2-1 at Boghead in the quarter-final; and then Dundee 1-0 in the semi-final at Hampden, the only goal coming, ironically, from a mistake by Dundee captain, Lisbon Lion Tommy Gemmell.
On this day in 1975, a crowd of 75,457 was at Hampden to see Celtic take on the Diamonds of Airdrie in the final. Paul Wilson gave Celtic the lead in 14 minutes; Airdrie got an equaliser in 42; just before the interval Wilson got his second; and George McCluskey sealed the victory from the penalty spot in 53 minutes. Billy McNeill collected the cup for Celtic and then announced his retirement after 790 appearances for the club in League, Scottish Cup, League Cup and European matches.