The 2017-18 campaign delivered ultimate heartbreak for Deportivo as Depor finished a crushing 18th in La Liga, resulting in relegation to the Segunda División. The season was defined by constant managerial turmoil, with Pepe Mel, Cristóbal Parralo, and ultimately Clarence Seedorf all trying to save the club. Leading the line was Adrián López, whose 9 crucial league goals were not enough to secure top-flight status. Relegation was mathematically confirmed in a dramatic 2-4 home defeat to Barcelona at the Riazor, a match where the Catalan giants simultaneously clinched the league title. It was a dark year that marked the club's third drop from the top flight in seven years and remains a painful but defining chapter in their recent history.