The third Pakistani cricketer at the centre of the spot-fixing scandal pleaded guilty to charges of conspiracy to cheat and conspiracy to obtain and accept corrupt payments.
Mohammad Amir, 19, admitted to the offences on Friday, September 16.
At the hearing Ben Emerson QC, representing Amir, said: "Amir wants to make it clear he wants to take full responsibility for what he did by deliberately bowling two no balls.
"This vulnerable 18-year-old boy, as he was then, was subjected to extreme pressure from those upon whom he should have been able to rely.
"He recognised the damage he has caused Pakistan cricket and he wants to do his best to put this right."
Reporting restrictions meant that Amir's plea was not able to be made known until after the case against Salman Butt and Mohammad Asif at Southwark Crown Court had concluded.
> Salman Butt and Mohammad Asif found guilty of both charges
