Barrera was optioned to Triple-A Rochester on Monday, Mark Zuckerman of MASNSports.com reports.
Barrera has served as the Nationals' backup catcher since early July, but he posted a paltry .441 OPS in 35 plate appearances over 14 games, so the team decided to send him back to Triple-A for the time being. It remains to be seen who will replace Barrera on Washington's roster, but Riley Adams is the most likely option.