"Feelin good after throwing a lot yesterday," Stafford tweeted Saturday.
Stafford tweeted a similar message Thursday after telling reporters Tuesday at University of Georgia's pro day -- he attended the school before going No. 1 overall in the 2009 NFL Draft -- that he is recovering well and rehabilitating in Birmingham, Ala., with therapists from Dr. James Andrews' office. Andrews performed the surgery on Stafford's right shoulder in January.
The Lions can receive reports on Stafford's progress, but they aren't permitting to make contact with him during the lockout.
"There's nothing he's had injury-wise his first two years that is going to affect him going forward," Lions coach Jim Schwartz told the team's official site Tuesday. "He knows that, we all know that. We (just) need to keep him on the field."
Once healthy, and if the lockout remains in effect, Stafford said he would go to where wide receiver and Lions teammate Calvin Johnson is or meet wherever they can to work out in preparation for the 2011 season.
Stafford played in just three games last season after playing in 10 as a rookie.
The Associated Press contributed to this report.