Duffy (Achilles) is out of his walking boot and now able to take groundballs, freelance writer Andrew Baggarly reports.
Duffy is not expected back until after the All-Star break, but it sounds like the third baseman is on the right track with his recovery. Chances are the 25-year-old will need a brief rehab assignment before returning to the Giants. Until then, Ruben Tejada and Conor Gillaspie will split reps at third base in San Francisco.