Forum:Question about Monsters Special Summoned in face-down defense position.

If a monster is special summoned in face-down defense position (The Shallow Grave, Morphing Jar 2) can it be flipped to face-up attack position in the same turn? If no, a link to the page showing the ruling for that would be appreciated ^^. --Bojack316 22:17, 26 August 2009 (UTC)