As finalist of the Coupe de France, Lens had the opportunity to participate in its first UEFA Cup Winners' Cup, but the team was knocked out quickly by the Dutch club ADO Den Haag. Lens' progress continued, and after finishing second in the league behind Nantes, they managed to qualify to the UEFA Cup. They knocked out Malmö FF, and above all, the Lazio. After an away defeat (2–0), they won 6–0 at the Stade Bollaert-Delelis after extra-time. Unfortunately, after this rare exploit for a French club, they were eliminated by East German side 1. FC Magdeburg. Worse, the club went back to the second division in 1978. The return among the elite was in 1979 with Roger Lemerre as head coach. During the 1980s, Gérard Houllier and Joachim Marx succeeded him. These were great gains to the team, even though the club lost players such as Didier Sénac, Gaëtan Huard and Philippe Vercruysse. In 1988, a local businessman took over the club, with the help of Serge Doré. During the same year, Arnaud Dos Santos was named head coach of the club, and led the club back to the first division in 1991. In 1993 and 1994, Lens played in the top of the league, and the team qualified for the UEFA Cup twice in a row. Lens even reached the semi-final of the Coupe de France after knocking out Paris Saint-Germain at the Parc des Princes, although the team lost to Montpellier. In 1998, "es Sang et Or" wrote the best page of their history under Daniel Leclercq ("the Druid"): French champions, Coupe de la Ligue semi-finalists and finalists of the Coupe de France (against PSG, a 2–1 defeat). Like a symbol, it is a player who started his career in Lens, Yohan Lachor, who scored the goal in Auxerre giving Lens the title in front of Metz. Under the "Druid", Lens won its second major title in 1999 with the Coupe de la Ligue against Metz, with a goal from Daniel Moreira. That year, in the UEFA Champions League, Lens also became the only club to have beaten Arsenal at Wembley Stadium (1–0, with a goal from Mickaël Debève), although they were knocked out.