In the 2005/06 season, Porter struggled with a long-term knee injury that lasted 10 months and prevented him from playing for the majority of the season. Porter returned to Hartlepool squad after 10 months injured and came on as a substitute against Huddersfield, scoring after 6 minutes to mark his return. However, his return could not prevent Hartlepool from being relegated from Football League One. He helped Hartlepool win promotion back to the Football League One the following season and helped Pools survive in the third tier the following two seasons.