The Nationals optioned Yean to Triple-A Rochester following Sunday's 11-5 loss to the Pirates.
Yean was recalled from Triple-A prior to Sunday's game. He was brought in for the third inning and looked good in his major-league debut, allowing one walk and zero hits while striking out three across two scoreless frames. Yean will head back to Rochester but could return to the majors when the Nationals need more right-handed depth out of the bullpen.