Grandal was banned in November for the first 50 games of the season after testing positive for performance-enhancing drugs. He hasn't publicly discussed the penalty beyond an initial statement.
The 24-year-old Grandal worked out Wednesday at spring training.
Grandal hasn't addressed his connection to a Miami anti-aging clinic associated with performance-enhancing drugs. He plans to talk to his teammates when the entire Padres squad gathers Saturday, and will meet with the media later that day.