Playing daily fantasy sports is legal in Oregon if only by default. There are no laws saying it is illegal, just as there are none saying it is legal. This will change soon as there are bills in circulation clearing up the issue and with sports betting now being legal, one would only guess DFS will continue in Oregon, only regulated.
Best Daily Fantasy Sites For Oregon
You can legally play at DFS sites like Fanduel, Draftings and even Monkey Knife Fight Daily Fantasy platform from Oregon.