How long Orr stays with Washington is another matter. He most likely will be sent back to Triple-A once left-hander Odalis Perez comes off the disabled list.
"Don't really know," Orr said, when asked his thoughts on the matter. "That's not up to me. I know Odalis has to come off the DL soon. It's something, as a player, you don't think about. You just try to do your best when you get the opportunity."
Before the callup, Orr was hitting .267 with two home runs and 30 RBIs for Columbus. Orr was one of the last cuts made in Spring Training after hitting .395 with a homer and four RBIs.
Orr has spent most of his career with the Braves, and helped them reach the playoffs in 2005.
On Friday, the Nationals gave Orr permission to represent Canada in the 2008 Summer Olympics. He can only participate if he is in the Minor Leagues.
"Of course, I would rather be in the big leagues, for sure," Orr said. "Any baseball player's goal is to be in the Major Leagues."
Bill Ladson is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.