He scored his first goal for Atlético the following year, on 21 July 2007, in a game against Gloria Bistriţa for the Intertoto Cup. In November 2007, Seitaridis damaged his achilles tendon in a match against UD Almería, which meant he needed to undergo surgery. His period of absence was initially evaluated at about six weeks, but he was ready two and a half months later, in April 2008. Due to his injury problem, he only managed to make 14 league appearances for Atlético in the 2007–08 season.