Pettis (groin) was a limited participant in Wednesday's practice, Cam Inman of The San Jose Mercury News reports.
Pettis' groin injury doesn't appear to be a long-term concern, but he's not quite in the clear yet for the 49ers' Week 1 game at Tampa Bay. The wideout dealt with criticism from coach Kyle Shanahan through training camp and the preseason, but the expectation remains that he'll open the season with the starting unit if his health cooperates.