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Description: Deceptive actions in sports, such as head fakes, present cognitive challenges by misleading opponents with irrelevant cues, requiring individuals to resolve conflicting information. This study investigates how athletic expertise influences the processing of deceptive actions and broader conflict scenarios by comparing the behavioral and neural responses of basketball players and non-athletes across three tasks: the head-fake task, the flanker task, and the face-viewpoint direction flanker task. Behavioral results revealed that athletes exhibited faster reaction times in the head-fake and face-viewpoint direction flanker tasks, suggesting an expertise advantage in processing kinematic information and social cues, while no group differences were observed in the flanker task involving non-social stimuli. ERP findings in the head-fake task demonstrated that non-athletes displayed larger N2 and P3 amplitudes, suggesting increased neural effort during conflict monitoring and evaluative processing compared to athletes, who exhibited greater neural efficiency. Across all tasks, a significant congruency effect was observed, with faster and more accurate responses in congruent conditions. However, no group-by-congruency interaction effects were found, suggesting that athletic expertise does not confer a general advantage in conflict processing. Taken together, our findings suggest that athletic expertise enhances the processing of kinematic and social information but does not extend to general conflict resolution.