Ferrer (shoulder) played catch from 60 feet Friday, Andrew Golden of The Washington Post reports.
The Nationals placed Ferrer (shoulder) on the 60-day injured list Sunday.
Ferrer was diagnosed with a strain of the teres major muscle Friday and will be shut down for three weeks before being reevaluated, Mark Zuckerman of MASNSports.comreports.
Ferrer is dealing with a lat injury, Andrew Golden of The Washington Post reports.
Ferrer (1-0) picked up the win Tuesday against the Rockies, allowing one run on three hits over 1.2 innings of relief. He struck out two without walking a batter.
The Nationals recalled Ferrer from Triple-A Rochester on Friday.
Ferrer will be called up by the Nationals on Friday, Jesse Dougherty of The Washington Post reports.
Ferrer was optioned to Triple-A Rochester by the Nationals on Tuesday, Jesse Dougherty of the Washington Post reports.
Ferrer could open the season in the Nationals' bullpen, Jesse Dougherty of The Washington Post reports.