Dimitri Patterson placed on IR

DAVIE, Fla. -- The Miami Dolphins placed starting cornerback Dimitri Patterson on season-ending injured reserve Tuesday.

Patterson battled a groin injury most of the season and re-injured it during Miami's 34-28 victory Sunday over the Pittsburgh Steelers.

Patterson played in six games, starting four, and is tied for the team lead with four interceptions.

Miami (7-6) also put backup cornerback and special teamer R.J. Stanford on season-ending injured reserve with a broken fibula.

The Dolphins signed free-agent cornerback Justin Rogers and claimed safety Michael Thomas off the San Francisco 49ers' practice squad to fill the spots on their 53-man roster.