James, who was also convicted of two charges of causing or inciting a child into sexual activity, has now been jailed for 21 years.
Gemma Kneebone from the Crown Prosecution Service said: “Antony James manipulated and controlled his teenage victims to fulfil his own sexual desires.
Former Team GB star Antony James groomed the girls, who were under 16, to satisfy his "perverse sexual needs".
"James was well aware of how young these victims were, and he set out to take advantage of this in a truly appalling manner, continuing to offend against them after they turned 16.
But the jury saw through his web of lies and he was found guilty of three rapes and three counts of engaging in sexual activity with a child.