Duo System

The duo system features two athletes from the same team who demonstrate techniques of self defence against a series of 12 attacks.

These are randomly called by the mat referee and can include situations such as grip attacks, neck locks, punches, kicks and armed attacks, for example with a stick or knife.

Athletes are judged for their speed, accuracy, control and realism across the male, female and mixed categories.

Judges look for skills such as power, control, effectiveness, attitude, speed and variability.

Scores are given between zero and 10, by five judges.

The lowest and highest scores are then taken away in a bid not to count mistakes.