Bain (shoulder) was a limited participant in Wednesday's practice, Brianna Dix of the Buccaneers' official site reports.
Bain was diagnosed with an AC joint sprain on Aug. 26. The first-round rookie's absence from the start of the regular season would be a huge blow to the Tampa Bay defense. Bain will likely need to log three consecutive practices, with hopefully an upgrade to full participation, in order to suit up for Sunday's opener against the Bengals.