Houck will start Saturday's game against the Nationals, Ian Browne of MLB.com reports.
Houck has pitched out of the bullpen in each of his last three appearances, and he posted a 4.26 ERA and 1.42 WHIP in 6.1 innings during that time. He tossed two innings against the Orioles on Tuesday and will pitch on short rest in Saturday's matchup against Washington.