Ross (shoulder) will throw a bullpen session on Wednesday and will need another start or two before being activated by the Nationals, Mark Zuckerman of MASNsports.com reports.

EDGE Analysis

Ross threw a successful three innings on Sunday during a rehab appearance for Low-A Hagerstown. It was thought that Ross might be able to return to the Nationals later this week, but it now looks like that has been pushed back another week or so as he continues to recover from his injured shoulder.