The Patriots announced Saturday they have signed linebacker Jeff Tarpinian from the practice squad to the 53-man roster today. To make room on the 53-man roster, the Patriots released offensive lineman Matt Tennant. Tarpinian, 25, made the New England 53-man roster last season after joining the team as a rookie free agent out of Iowa. The 6-foot-3, 240-pounder played in seven games with one start and finished with four defensive tackles and eight special teams tackles. He was placed on injured reserve with a head injury on Nov. 24, 2011. Tarpinian was released by the Patriots on Aug.