RB Derrick Locke, Kentucky: The Dolphins clearly have a need for a speedy back who can double as a returner, which is why there have been suggestions they'll go after Reggie Bush, and Locke is that type of player. He's got tremendous quickness and should make an NFL roster as a rookie.
SS DeAndre McDaniel, Clemson: McDaniel was highly rated entered the 2010 season and he has shown the ability in the past to make plays in the secondary. The Dolphins really have no proven starter alongside Yeremiah Bell, so there's an opening for anyone who can dazzle the coaches in training camp.
WR Ricardo Lockette, Fort Valley State: A raw and speedy small-school receiver, Lockette might be too similar to Dolphins fourth-round pick Edmond Gates to be of interest to Miami, but he's a good prospect nonetheless and it was a surprise he wasn't drafted in April.
TE Weslye Saunders, South Carolina: The Dolphins have five tight ends on the roster but no downfield threat. Saunders had his share of off-the-field issues at South Carolina, but he certainly looks the part of an NFL tight end and has a lot of upside.
NT Ian Williams, Notre Dame: Good nose tackles are hard to find, which is why giving Williams a look makes sense. He might be a tad undersized, but there's no questioning his toughness.
LB Mark Herzlich, Boston College: Perhaps the most intriguing of all the undrafted rookie free agents, Herzlich is an inspirational story after his return following a bout with cancer. Herzlich might or might not ever be the player he was before he had to sit out a year with the illness, but he most definitely is worth a look.
LB Scott Lutrus, Connecticut: An active linebacker with good size, Lutrus could help at a position where the Dolphins could use more depth.
QB Pat Devlin, Delaware: The Dolphins have only Chad Henne under contract at quarterback, so they need to bring in a young arm to try to develop. Devlin isn't a great prospect, but neither are any of the other undrafted rookies at the position. If they were, they wouldn't have gone undrafted.
RB Noel Devine, West Virginia: Another player in the mold of Derrick Locke. Devine is a playmaker, but he's awfully small, so he'd have to be used sporadically.
TE Schuylar Oordt, Northern Iowa: A small-school prospect, Oordt is more of a receiving tight end, but he does have some down-the-field potential and he's also got great size.