Crossen (knee) is doubtful for Sunday's matchup against the Steelers, David Furones of the South Florida Sun Sentinel reports.
Crossen exited Miami's Week 6 loss to the Vikings with the knee issue and was unable to participate in practice in any capacity during the week. The Dolphins' secondary could be missing a number of key players in their secondary against the Steelers, and Crossen's absence would further hurt their depth.