Olympiacos F.C. in European football Italian soil. In the next round they faced the competition's defending Champions Tottenham Hotspur. Olympiacos didn't manage to qualify against the Spurs, but they managed to get a 1–0 win in Piraeus, which ended Tottenham's 16-match undefeated streak and marked the first ever victory of a Greek football club against an English side. Two years later, Olympiacos entered the 1974–75 European Cup and they were drawn to face Kenny Dalglish's Celtic F.C., one of the strongest teams in European football at that time and semi-finalists of the previous season. The first leg was played in Celtic Park, where Celtic had
Olympiacos F.C. in European football a Greek player as well) in the European competitions. The match ended 2–2 ( 19', Yfantis 45' – Altafini 33', 72') with Olympiacos taking the lead two times in the game and putting in a great performance against the Italian Champions. In the second leg, Milan won 3–1 and qualified for the next round despite Olympiacos' strong performance, especially in the second half. In 1963, Olympiacos became the first ever Greek club to win a non-domestic competition, winning the Balkans Cup, which was the first international success by any Greek football club. The Balkans Cup was a very popular international