Povich and the Orioles won't play the Red Sox as scheduled Thursday, as the game was postponed due to rain.
The two clubs will make up Thursday's contest during a doubleheader Friday, and Povich will start the earlier of the two games, per Jake Rill of MLB.com. The 25-year-old lefty has already faced the Red Sox once this season, giving up three earned runs and punching out eight batters in 4.1 innings during his season debut March 31.