* C Josh Samuda/DE Derrick Shelby/OT Andrew McDonald: The three undrafted rookies who are performing the best so far. The Dolphins need a center to back up Mike Pouncey, and Samuda, from UMass, seems to have a clear advantage over Nate Garner or Ryan Cook for now. Shelby, out of Utah, is listed ahead of veteran Jamaal Westerman on the depth chart. McDonald, who signed with the Dolphins out of Indiana after impressing the team as a tryout player at rookie camp, could stick as a backup tackle
http://blogs.palmbeachpost.com/thed...phins-release-first-depth-chart-of-preseason/
http://blogs.palmbeachpost.com/thed...phins-release-first-depth-chart-of-preseason/