The 2008-09 campaign delivered a vital year of re-establishment for Rayo Vallecano as the Rayistas, newly promoted, finished a meritorious 5th in the Segunda División. Leading the charge was David Aganzo, whose 12 goals proved decisive in a campaign built on renewed professional status and defensive grit. The side was anchored by David Cobeño, who claimed the prestigious Zamora Trophy (least goals conceded) and became a cult hero for his dramatic goal against Elche. It was a standout year that marked the club's successful return to the top divisions under manager Pepe Mel and remains a defining chapter in the Franjirrojos' history.. The 2009-10 campaign saw Rayo Vallecano comfortably establish themselves in the Segunda División, finishing a respectable 11th place and maintaining their status in the second tier. Leading the charge was the clinical forward Rubén Castro, whose crucial 14 goals anchored the attack in a season built on stability and a desire to climb the table. It was a solid year of consolidation for Rayistas, with the squad featuring key figures like the returning goalkeeper David Cobeño and the midfield general Movilla, marking a vital step in their journey back towards the Spanish top flight.