The New England Patriots announced that defensive end Ty Warren has been placed on season-ending injured reserve.

ESPN's Mike Reiss reported this afternoon that Warren has a hip injury that will likely require surgery.

Linebacker Derrick Burgess, who has been contemplating retirement, has been reinstated to the 80-man roster.

Burgess appeared in 16 games for the Patriots in 2009, totaling 35 tackles, including 5 quarterback sacks. Burgess re-signed with the club on May 27, and was expected to earn $1.4 million in base salary, with his one-year deal worth a maximum of $1.65 million.

A third-round pick (63rd overall) out of Mississippi by the Philadelphia Eagles in 2001, Burgess has 262 tackles and 52 quarterback sacks during his nine-year career. Burgess missed all but one game in 2002 with a broken foot, and the entire 2003 season after rupturing his Achilles' tendon.