Left tackle Riley Reiff has a hamstring injury. (Daniel Mears / Detroit News)
Allen Park – Left tackle Riley Reiff was back on the practice field Thursday, but he's still limited in what he could do.
After going through warm-ups, he ran with the first offense during the skeleton drills then worked on the side with trainers while the rest of the team went through position drills. Reiff is working his way through a hamstring injury.
Receiver Calvin Johnson (knee), who sat out Wednesday, was back on the field Thursday. He went through warm-ups and position drills during the portion open to the media.
Defensive tackle Andre Fluellen (concussion) and safety Louis Delmas (knee) also went through warm-ups and position drills.
The only player still out is right tackle Corey Hilliard (knee).