Carolina Panthers cornerback Captain Munnerlyn has been placed on injured reserve with a hamstring injury, the team announced on Friday.
Munnerlyn had been ruled "Out" for Saturday's game against the Tampa Bay Buccaneers.
A 2009 seventh-round pick out of South Carolina, the 5-foot-8, 186-pound Munnerlyn ascended to the role of full-time role of starter in 2011, totaling a career-high 58 tackles, the first two quarterback sacks of his career, and had five passes defensed in 14 starts this season. In his 45-game NFL career, Munnerlyn has 147 tackles, two quarterback sacks and three interceptions heading into 2012, which is the final year of his rookie contract.
Rookie safety Jonathan Nelson has been activated from the practice squad to replace Munnerlyn on the 53-man roster. A 2011 seventh-round draft pick out of Oklahoma by the St. Louis Rams, Nelson had nine tackles for the Rams during the preseason, but did not make the 53-man roster coming out of training camp and spent the first two weeks of the 2011 regular season on the Rams' practice squad. Nelson joined the Panthers practice squad in November.