The Browns placed safety Usama Young on injured reserve with a thumb injury that likely will require surgery. In addition, the club signed defensive back Jordan Mabin to the practice squad and free agent quarterback Josh Johnson to active roster.
Young played in 13 games with 11 starts this year. He recorded 52 tackles, 1.5 sacks, three interceptions, seven passes defensed and a fumble recovery.
Originally signed by Baltimore as an undrafted free agent on May 15, 2012, Mabin spent two weeks on the Ravens' practice squad this season. He appeared in 51 career games at Northwestern (2008-11) where he recorded 252 tackles, seven interceptions three fumble recoveries and two forced fumbles. The 5-11, 185-pound Mabin is a native of Northfield Center, Ohio, where he attended Nordonia High School.