Celtic reached the European Cup final for the second time in 1970, after they defeated English champions Leeds United in both legs of the semi-final. In the first leg, Celtic beat Leeds 1–0 at Elland Road with a goal from George Connelly. The second leg, which was played at Hampden Park in front of almost 140,000 people, was won 2–1 by Celtic. Hughes scored Celtic's first goal in that match, after Billy Bremner had given Leeds an early lead and levelled the aggregate score. Celtic lost the final 2–1 after extra time to Dutch side Feyenoord, with Hughes playing the whole game. Despite playing primarily on the wing, Hughes remains one of Celtic's all-time highest goal scorers (8th in all competitions).