To make room for Cosby on its 53-man roster, the club waived running back Jeremiah Johnson.
Cosby (5-foot-9, 189 pounds) is a third-year player who spent his first two NFL seasons with Cincinnati after signing with the Bengals as a college free agent from the University of Texas on May 1, 2009.
In 32 career games, he totaled six receptions for 71 yards (11.8 avg.) on offense in addition to extensive return duties on special teams. He totaled the second-most punt returns (70) in the NFL from 2009-10, averaging 10.0 yards per return along with 16 kickoff returns (17.7 avg.). His 474 punt return yards in 2009 set a Bengals record and led the NFL.
He played 52 games (32 starts) in four seasons at Texas, finishing second in school history in receptions (212), third in receiving yards (2,598) and fourth in receiving touchdowns (19).
A two-time Class 2A all-state selection at quarterback and defensive back at Mart High School in Mart, Texas, Cosby was born on Dec. 23, 1982. His first name is pronounced KWAHN.
Drafted by the Dolphins in the fifth round (161st overall) of the 2009 NFL Draft, Nalbone was a four-year letterman at Monmouth University, where he totaled 101 career receptions for 1,079 yards (10.7 avg.) with nine touchdowns. He attended Lawrence High School in Lawrenceville, N.J., and was born on May 14, 1986.