Seahawks sign CB Keydrain Calligan, waive DT Thor Griffith

The Seahawks have made a pair of roster moves on Thursday.

Seattle announced the club has signed Keydrain Calligan and waived defensive tackle Thor Griffith.

Callahan is an undrafted rookie out of Southeastern Louisiana. He was previously with the Texans this offseason.

Griffith had signed with the Seahawks earlier this week.