ARLINGTON -- The Rangers' game with the Orioles on Wednesday was postponed because of rain, and it will be made up as part of a doubleheader on Thursday.

Kevin Millwood and Kason Gabbard will pitch for the Rangers. Millwood, who was scheduled to pitch on Thursday, will go in Game 1. Gabbard, who was supposed to pitch on Wednesday, will pitch Game 2.

The Orioles will go with right-hander Steve Trachsel in Game 1, while left-hander Adam Loewen will start the nightcap.

Tickets for Wednesday's game can be exchanged for any game remaining on the Rangers' home schedule. Tickets for Thursday's game are good for both games of the doubleheader. The Rangers announced their Wednesday $1 hot-dog promotion will be in effect for both games of the doubleheader. Both games will be shown locally on Channel 27.

The Rangers' biggest pitching concern right now is they will need a starter for Monday's game against the Angels since it's unlikely Millwood or Gabbard will be able to come back on three days' rest. Texas manager Ron Washington said it's likely either reliever Jamey Wright or Josh Rupe will start, depending on who is needed over the weekend.

"We'll wait until we get out of [Thursday's games] before we decide that," Washington said. "If everything falls into place, then we won't have to worry about it."

But the Rangers also are expected to drop one of their eight relievers on Saturday, when Luis Mendoza, their fifth starter, is activated off the disabled list. Rupe is one of the candidates to be dropped because he still has options left.

The last time Gabbard started a game against the Orioles in a doubleheader, the Rangers ended up winning, 30-3. But Gabbard started Game 1 of that doubleheader.

"We'll take our chances this way," Washington said. "I don't think we'll ever score 30 runs again."

Washington is hoping the weather will clear up. If so, Milton Bradley may start at designated hitter in one game and in the outfield in the second game. Washington said Josh Hamilton will start in center field is Game 1, but he may get the second game off.