Bears released S Derrick Martin with a non-football injury designation. Martin, a journeyman special teamer, broke his collarbone in a recent car accident. The Bears needed his roster spot after successfully putting in a waiver claim for former Dolphins OT Michael Ola.

Bears S Derrick Martin recently suffered a broken collarbone in a car accident.

Bears re-signed S Derrick Martin. The journeyman veteran made seven appearances on special teams last season, registering three tackles. He'll fight for one of the Bears' final roster spots in training camp.

Bears re-signed S Derrick Martin. Martin spent time with the Bears this summer. He's taking the roster spot of Charles Tillman, who was placed on short-term I.R. with torn triceps Tuesday.

Bears signed DB Derrick Martin, formerly of the Patriots. Martin, 28, is a career special teams player.

Patriots sign DB Derrick Martin and LB Mike Rivera. The Patriots have been especially thin in the secondary with Pat Chung and Steve Gregory sidelined. Both Martin and Rivera figure to see time on special teams.

Giants S Derrick Martin was forced from Sunday's game against the Eagles with a hamstring injury, and will not return. A reserve safety and special teamer, Martin has 10 tackles this season. If he's staring at a multi-week absence, he'll likely be sent to injured reserve.

Giants signed S Derrick Martin, formerly of the Packers. The 26-year-old Martin had a reputation as a top special teams gunner before a knee injury ended his 2010 season. He won't help on defense in New York.