Ryan (glute) threw on flat ground Monday, Aaron Gleeman of AaronGleeman.com reports.
The right-hander landed on the injured list Friday due to a left glute strain, but it's encouraging that he was shut down from throwing for only a few days. Ryan will be eligible to be reinstated for the Aug. 21 matchup with the Padres, though it remains to be seen if he'll be ready to go at that point.