Rio de Janeiro: The Rio Olympics have yet to begin and swimming's enfant terrible Sun Yang has already courted controversy after claims the Chinese giant tried to intimidate Australian rival Mack Horton during training. Olympic champion Sun, whose hot temper has landed him in trouble before, was said to have splashed water at Horton during a practice session, just days before they face off in the men's 400 metres freestyle.

Sun Yang. Pic/AFP