Even in the preseason, Patrick Mahomes is a magician. The Kansas City Chiefs star made another highlight-reel play during Saturday’s preseason game against the Detroit Lions when he found Travis Kelce with an incredible behind-the-back pass. Later, Mahomes called it a “mistake” rather than a planned play. He said he did it out of spite because Kelce ran the wrong route. In a separate in-game interview, Kelce disagreed. He said he couldn’t hear the initial play – doing an impression of Mahomes in the process – and said it turned out to be a spur-of-the-moment move. “It wasn’t a play? No, it was…