Duffy (heel) has been working out without restrictions at Tropicana Field in recent days, Marc Topkin of the Tampa Bay Times reports.
The infielder's latest setback involved a ball he fouled off his big toe in early May, which had caused bruising and yet another pause in his rehab. However, Duffy has apparently been fielding grounders, running and hitting without any limitations for multiple days. Although he's yet to resume playing in rehab games with High-A Charlotte, that could well be imminent given his recent activity level.