Moore was signed during the preseason on the same day that tight end Kellen Winslow was released, but he never really gained a foothold with the offense. Moore was active for 14 games with the Seahawks this season, but only caught one pass for six yards in a 24-21 loss against the Miami Dolphins Nov. 25.
With Zach Miller firmly entrenched as the No. 1 option at tight end, and backed up by third-year pro Anthony McCoy, Moore didn't have much of an opportunity to make a statement, and was slowed up by several drops and too many penalties.
McGrath was signed as an undrafted free agent following the NFL draft and has stuck with the team through training camp and the practice squad for most of the year. He played college football at Henderson College in Arkansas and caught 55 passes for 656 yards and four touchdowns in 2010 when he made first-team All-Gulf South Conference.