The club also said that tight end Drake Dunsmore, a seventh-round pick of Tampa Bay in 2012, was retiring. Dunsmore spent most of the 2012 season on the Bucs’ practice squad and finished the campaign on the practice squad injured reserve list. Dunsmore re-signed with the Bucs in January.
Irvin (6-2, 295) appeared in 12 contests as a reserve for Tampa Bay in 2012, notching six tackles. Hardman (6-6, 300) played in three games for the Buccaneers.
Irvin previously played for Carolina (2010) and Jacksonville (2011). Both clubs, like the Buccaneers, employed 4-3 defenses. He was a third-round pick of the Panthers in 2009.
Hardman has appeared in 15 games in three NFL seasons, all with Tampa. He made four starts at right guard to conclude the 2010 season. He joined the Buccaneers as an undrafted free agent in 2010.
In other roster moves, the Buccaneers waived defensive back James Rogers, who spent time on their practice squad last season. They also confirmed placekicker Nate Kaeding had decided to retire, the news of which had surfaced earlier Thursday.