Now here's something you don't see every day - biting in wrestling.
Despite the fact that he was caught on camera biting his American opponent, and that per international rules biting is 'an act of flagrant misconduct and, on the first occurrence the individual shall be disqualified from competition', Ukrainian wrestler Andriy Kvyatkovskyy was not disqualified in his quarterfinal match against Frank Molinaro. The American did however go on to win the match.
What follows is a very telling nonverbal moment of Kvyatkovskyy's.
Here is a screen-capture of the act.
As Molinaro calls to an official while accusing his opponent, Kvyatkovskyy immediately buries his face in shame beneath his left upper arm.
Here we see it from another angle.
A moment later Kvyatkovskyy displays this MAP (Manipulator, Adaptor, Pacifier) once again. MAPs are seen during moments of increased anxiety. In this context, this repeated body language gesture is profoundly telling. Covering the face and in particular the eyes (diminishing eye contact with the referee) during an accusation is a strong indication of guilt.
Conclusion: While wresting in the Rio 2016 Olympics, Andriy Kvyatkovskyy bit his opponent Frank Molinaro and in so doing he felt immediate shame. This nonverbal display is also a signal of his guilt.
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