R.J. Mattes

R. J. Mattes (born April 29, 1990) is an American football offensive lineman for the Boston Brawlers of the Fall Experimental Football League (FXFL). He played college football at North Carolina State.

New England Patriots

On May 13, 2013, Mattes signed with the New England Patriots as an undrafted free agent. On May 23, he was released by the Patriots. On June 3, 2013, he was re-signed by the team. On August 19, 2013, he was released by the Patriots for the second time. On August 20, 2013, he cleared waivers and was placed on the Patriots' injured reserve list. On August 24, 2013, he was waived from injured reserve with an injury settlement. Mattes was signed by the New England Patriots as a free agent on Dec. 30, 2013He was waived on June 11, 2014.

Tampa Bay Buccaneers

Mattes signed with the Tampa Bay Buccaneers on August 21, 2014. The Buccaneers waived Mattes on August 24.