The Raiders have release tight end O.J. Howard.

A former first-round pick, Howard was signed by the club during the offseason to bolster their tight end room.

But the emergence of second-round pick Michael Mayer and Jesper Horsted during training camp made Howard expendable.

This is a developing story. Check back with updates.

Contact Vincent Bonsignore at vbonsignore@reviewjournal.com. Follow @VinnyBonsignore on Twitter.