Martinez indicated that he's encouraged that he's been able to put weight on his sprained right foot, but fears he may not be ready for Opening Day, Chris McCosky of The Detroit News reports.
Martinez suffered the injury after making a catch in Saturday's Grapefruit League game, but the Tigers have remained tight-lipped on the severity of the setback. An official timetable for Martinez's return should be available Friday, when he's set to undergo a weight-bearing stress CT scan in Charlotte. If the Tigers determine that Martinez will require a DL stint to begin the season, Steven Moya could be tasked with serving as his primary replacement in right field.