Cartwheels, in the context of turnovers on a football field, refers to when a player loses possession of the ball, typically through a fumble or interception. In this case, cartwheels could be a slang or informal term for turnovers.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Turnovers on a football field, maybe?. Explanations are generated by AI and may be inaccurate.