D-Backs catcher José Herrera went unclaimed on waivers and was assigned outright to Triple-A Reno, according to the MLB.com transaction log. Arizona designated him for assignment when Gabriel Moreno returned from the injured list last week. Herrera has played parts of four seasons as a light-hitting backup. He's worked behind Moreno for the past three of those. The switch-hitting Herrera has tallied 204 plate appearances this season. He has slashed .187/.285/.259 with a pair of home runs. He has hit a trio of homers among his 562 career trips to the dish.
Francisco Mejia signed a minor league contract with the Nationals and was assigned to Triple-A Rochester, coming off a stint in the Mexican League where he excelled. Mejia's earlier high expectations faded after several disappointing seasons. Despite challenges, he displayed strong performance in Mexico, highlighting potential resurgence opportunities.