Adams was optioned to Triple-A Rochester following Sunday's 5-1 win over Atlanta, Spencer Nusbaum of The Washington Post reports.
Adams will head back to Triple-A after batting .243 with two RBI and four runs over 37 at-bats since getting a call-up to Washington on July 3. With Adams headed to Rochester, Drew Millas will operate as the primary backup option at catcher behind Keibert Ruiz.