Shelley Smith started the Dolphins' third preseason game at right guard, but rotated series with Dallas Thomas.
Shelley Smith took most of the first-team right guard reps at Dolphins practice this week.
Shelley Smith is now working as the second-string left guard at Dolphins camp.
ESPN Dolphins reporter James Walker said the team's center position "is starting to become a major concern."
Converted G Shelley Smith and QB Ryan Tannehill struggled with center-to-quarterback exchanges on the first day of Dolphins camp.
The Dolphins have moved RG Shelley Smith to center.
The Dolphins are using Shelley Smith at right guard.
Dolphins agreed to terms with OG Shelley Smith, formerly of the Rams, on a two-year, $5.5 million contract.
Free agent OG Shelley Smith left his Patriots visit without a deal and will now meet with the Dolphins.
Free agent OG Shelley Smith left his Giants visit without a contract and is now visiting the Patriots.
Free agent G Shelley Smith is visiting the Giants Wednesday.
The St. Louis Post-Dispatch reports four teams expressed interest in free agent OG Shelley Smith on Saturday.
Shelley Smith and Chris Williams rotated as the first-team left guard at Rams OTAs.
Texans waived OG Shelley Smith.