PARIS, Dec 8 (Reuters) - Olympique Lyon warmed up for their decisive Champions League Group E tie at Rangers in poor fashion by losing 1-0 at modest Caen in Ligue 1 on Saturday.
Forward Yoan Gouffran hit the winner for promoted Caen when he raced into the box to beat Lyon goalkeeper Remy Vercoutre on 18 minutes.
Lyon, who looked sluggish in the first half and clumsy in the second, have to win in Glasgow on Wednesday to make the last 16 of the Champions League while Rangers only need a draw to advance.
The six-times French champions, who conceded their fourth league defeat this season, still top the standings on 37 points from 17 games but second-placed Nancy, held to a 0-0 home draw by Valenciennes, closed the gap on the leaders to four points.
Le Mans moved into third, eight points off the pace, by winning 3-1 at Racing Lens courtesy of a goal in each half by forwards Tulio De Melo and Gervinho and a late effort from substitute striker Antony Le Tallec.
Olympique Marseille prepared for their Champions League Group A decider against Liverpool with a 2-0 home win over Monaco earlier on Saturday.
Defender Julien Rodriguez opened the scoring with a header on 52 minutes after a volley by fellow midfielder Benoit Cheyrou bounced off the crossbar.
Midfielder and captain Lorik Cana wrapped it up when he headed home from a corner with 20 minutes remaining.
Marseille, recovering from a dismal start, climb three places up to 13th in the 20-strong table.
The 1993 European champions now welcome Liverpool on Tuesday and will reach the knockout stages of European club soccer's premier event if they win. They could also qualify with a draw, providing Besiktas do not win at Porto.
Liverpool will go through if they win in Marseille or if they draw and Besiktas beat Porto.