The phrase "once drafted" is correct and usable in written English.
It can be used to indicate the past tense, especially in reference to something that has been prepared, such as a document. Example: The lawyer read through the contract once drafted.
Once drafted, he drove his gray Vega station wagon on a two-day trip from Lucy to Oakland.
Teams that change head coaches and give up on a quarterback once drafted third over all generally don't enjoy smooth waters right off the dock.
A proposal for a law that would make possible the criminal prosecution of companies was once drafted, but was rejected by parliament.
One baseball official did not discount the possibility that the Cincinnati Reds were waiting for this series to end before dealing Reggie Taylor, a left-handed-hitting backup outfielder once drafted in the first round, to the Yankees.
In his role at the Interior Department, Mr. Myers once drafted a ruling that upheld a regulatory change allowing a foreign-owned gold mine to be established on Indian land in California.
That he was a three-year starter at the University of Florida, has a strong arm or was once drafted by the Tampa Bay Devil Rays mattered not a bit.
Build a prototype or rough draft of your invention once your drafted plans are complete.
It was merely that these were extenuating circumstances, and he wanted the Jaguars to recognize what he did: rarely can a team with sagging ticket sales, without a national profile or star power, solve all three problems at once by drafting a native son.
The Raptors have made the playoffs only once since drafting him.
Once you've drafted a list, hold the seminar in your own classroom.
(I even listened to "MacArthur Park" — maybe more than once — as I drafted the story).
