Sanchez (shoulder) threw a 15-pitch bullpen session Friday, Christina De Nicola of MLB.com reports.
Sanchez has been throwing bullpens since the end of June but the Marlins have been taking it slowly with the 25-year-old as he recovers from right shoulder inflammation. Considering he's not anywhere near being stretched out to a starter's workload, the Marlins could plan to use Sanchez out of the bullpen once he's activated.