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Enke's professional senior career began at Borussia Mönchengladbach, a German sports club based in Mönchengladbach, North Rhine-Westphalia. He joined the club's youth academy at the age of 16 and progressed through the ranks, making his senior debut in the 1998-1999 season. During his time at Borussia Mönchengladbach, Enke established himself as a talented and promising goalkeeper, showcasing his exceptional shot-stopping abilities and commanding presence in the penalty area.