The Dolphins have had trouble keeping their cornerbacks healthy this year and with two Super Bowl winning QBs on the shedule the next few weeks, the team went looking for help at the position Monday.

The team brought in half a dozen cornerbacks for tryouts Monday, according to a league source. Among those were former University of Miami and Oakland Raiders starter DeMarcus Van Dyke.

Former Bills starter Terrence McGee, cut by Buffalo in February, was among the players brought in although at 32 years old he doesn't fit the Dolphins typical search for youth.

In that regard, the tryout for Ron Bartell also raises eyebrows because he's 31 years old. Bartell was a second-round pick of the Rams in 2005 but has bounced around with Detroit and Oakland.

Ryan Mouton, a former third round draft pick of the Tennessee Titans, was among the group trying out also. Mouton was cut by the Washington Redskins from their injured list in August.

The Dolphins also took a look at Jacob Lacey, who was waived by the Vikings in August after he had arthroscopic knee surgery. Lacey played with the Colts but after being cut in 2011 bounced around to the Lions and Vikings.

The sixth of the CBs brought in was Jalil Brown, 25, who was with Kansas City until the final round of cuts this year. Brown was a fourth-round pick of the Chiefs in 2011.

The Dolphins are concerned cornerback Dimitri Patterson last week seemed to take a step back in his return from a groin injury suffered the first week of the season. Patterson had practiced on a limited basis the week after the injury and was a game-time decision for the game against Indianapolis. After missing that game Patterson was again limited in practice last week and then ruled out days before Miami's game against Atlanta.

The Dolphins have been trying to get both their rookies -- Willie Davis and Jamar Taylor -- ready to play and so far have had only mixed results. Davis recovered sufficiently enough from a toe injury to be active for Sunday's game but Taylor was not.

Taylor, fighting a groin injury and the aftermath of hernia surgery, has practiced the past two weeks but has yet to play a game for the Dolphins.