Duran hit a solo home run in his only plate appearance during Saturday's 9-3 win against the Orioles.
Freddy Fermin started behind the plate but had to leave after taking a warm-up pitch from Yuki Matsui to the head area in the sixth inning. Duran finished out the contest and took Albert Suarez deep in the eighth. Luis Campusano remains on the IL due to a toe injury, so if Fermin needs to miss additional time, Duran figures to take over as the Padres' primary catcher.