Diggs (knee) caught passes from Josh Allen during Sunday's walkthrough practice, Sal Capaccio of WGR Sports Radio 550 Buffalo reports.
The Bills wore jerseys (sans pads) and shorts, but Diggs' presence was an encouraging sign as he looks to put a knee injury behind him. The issue has kept him out of practice since Aug. 9, a span in which he missed the team's first two preseason games. It's unclear if coach Sean McDermott will entertain the thought of getting Diggs some in-game reps in Saturday's exhibition finale Saturday against the Packers, but the wide receiver's progress this week will be one to monitor closely to get a sense of his health.