1976 Olympics

In 1976, the 38-year old Onishchenko entered the Olympics as a three-time world champion but never having won the gold as an individual. Onishchenko was a top fencer and had won gold in the 1974 World Modern Pentathlon Championships in Moscow. Although he was rated fourth, which would relegate him to being a reserve, Onishchenko won a preliminary tournament in the Soviet Union that pushed him onto the team.^[4]

After the first event of the pentathlon, the Soviet team found itself in fourth place, trailing closely behind Britain. Fencing was the next event: a one-touch épée tournament. During Onishchenko's bout with British team captain Jim Fox, the British team protested that Onishchenko's weapon had gone off without actually hitting anything.^[5] In fact, Onishchenko's épée was in the air away from Fox when the hit was registered.^[6]

Fox requested an examination of Onishchenko's weapon, which was found to be faulty, resulting in points being deducted from Onishchenko's score. However, the British team filed an official protest and demanded further examination.^[6] The bout was allowed to continue, and he won by a large margin.

In electric épée fencing, a touch is registered on the scoring box when the tip of the weapon is depressed with a force of 750 grams, completing a circuit formed by the weapon, body cord, and box. It was found that Onischenko's épée had been illegally modified to include a switch that allowed him to close this circuit without actually depressing the tip of his weapon, so he could register a touch without making any contact on his opponent. Onischenko was ejected from the competition, which forced the Soviet Union to scratch from the team event. The British team that exposed Onishchenko went on to win the gold medal.^[2]

Newspapers decried him as "Disonischenko" and "Boris the Cheat".^[7] Two months later it was reported he had been called before Soviet leader Leonid Brezhnev for a personal scolding.^[2]