Originally, Wii Sports Resort did not include a golf game. But it ended up in Wii Sports Resorts only after Miyamoto mistakenly said it would be in the game.
Nintendo staffer Takayuki Shimamura recounts the story with a laugh: "Right after getting back to Japan, he suddenly said: "You know we're including golf now." Apparently he'd stated in an interview that this time round golf shots would be determined by the backswing, even though at that time a golf game didn't exist in any shape or form!"
So there you go! Wii Sports Resort golf, courtesy of an interview flub.