Oakland Raiders make coaching changes

The Oakland Raiders have fired a number of coaches after finishing the 2012 NFL season with four wins and 12 losses.

Offensive coordinator Greg Knapp has been relieved of his duties, along with the linebackers coach, special teams coordinator and offensive line coach.

However, head coach Dennis Allen remains in his post having spent just one season with Oakland.

The Raiders finished third in the AFC West, with one of the worst records in the league this season.