Which wrestler claims to have invented the DDT move in a match where he had his opponent, The Grappler, in a front facelock, but when he tripped over his opponent's foot he fell backwards and his opponent landed on his head. The move was modified later on.

Jake The Snake Roberts is the correct answer. He accidentally created the DDT during a match when he tripped while holding his opponent in a front facelock, causing both to fall backward with the opponent landing on his head. Edge, Owen Hart, and Ric Flair were not associated with the invention of this iconic wrestling move.