Hardison (elbow) was a full participant at the Dolphins' organized team activities Monday, Hal Habib of the Palm Beach Post reports.
Hardison had an elbow injury when he signed with Miami as an undrafted free agent in April. The UTEP product appears to be healthy now, though. He'll compete with Skylar Thompson for the No. 3 option under center behind Tua Tagovailoa and Mike White.