According to Volin, the cornerbacks working out at the team's Davie, Fla., headquarters were Drew Coleman, Donald Strickland and Rod Hood.
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The Dolphins are in the market for cornerbacks after trading Vontae Davis to the Indianapolis Colts earlier this week. Sean Smith and Richard Marshall are locked in as the starters, with Nolan Carroll, Quinten Lawrence (a converted wide receiver), Kevyn Scott and Vince Agnew behind them on the depth chart.
Coleman and Strickland primarily are nickel corners. So with Smith and Marshall locked into starting roles, the Dolphins' interest in them makes sense. Coleman is coming off an injury, however, released from the Detroit Lions' injured reserve list with a settlement. Hood has started 51 games during his career, including four of his nine games with the St. Louis Rams last season. He missed the 2010 season with a torn ACL.
As mentioned in the Stallworth post, a signing right now would be a surprise as all three defensive backs are vested veterans whose base salaries would be guaranteed if they're on the roster in Week 1. If either of the three are signed, it most likely wouldn't come until after the regular-season opener.