Allen Park — Detroit Lions rookie guard Frank Ragnow unexpectedly popped up on the practice report on Thursday.
He was on the field for the portion open to the media, but was listed as limited on the afternoon report, suggesting he suffered an injury during the session.
The extent of the injury was not immediately known. Ragnow was not in the locker room after practice, and Lions coach Matt Patricia does not speak to the media on Thursdays.
A first-round draft pick out of Arkansas, Ragnow has started the first three games at left guard.