Source: Cunningham tears Achilles' tendon

CORTLAND, N.Y. -- Backup outside linebacker Jermaine Cunningham tore an Achilles' tendon Saturday night in the New York Jets' intrasquad scrimmage, a league source confirmed on Sunday. He's expected to miss the entire season.

Cunningham was helped off the field late in the scrimmage after a running play in which he got caught in a pile. Afterward, Rex Ryan called it a leg injury, saying he was "concerned" because Cunningham was unable to return.

He was no lock to make the team, but Cunningham was competing for a spot as a situational pass rusher. Fortunately for the Jets, they have some depth at the position, especially after signing Jason Babin at the start of camp.

Cunningham was a second-round pick of the New England Patriots in 2011, but he was released on the final cuts in 2013. He signed with the Jets last November but played in only two games. Cunningham, 26, has played in 38 career games, compiling 3.5 sacks and 59 combined tackles.

The injury was first reported by the NFL Network.