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In 2013, Mathieu Debuchy won the Coupe de la Ligue with Saint-Étienne. This was a major achievement for the club, as they had not won the competition since 1981. Debuchy played an important role in the victory, scoring the winning goal in the final against Rennes. The win was a significant boost for the club, as it showed that they were capable of competing at the highest level.